Chalos Shop



Paraiba Tourmaline

These cupriferous tourmalines from the Mina da Batalha in the Federal Brazilian State of Paraiba are small, rare and precious.

Their spirited turquoise to green colours are such as are not found in any other gemstone in the world. The exclusiveness of this legendary find makes these rare gemstones real treasures.

Paraiba – the word has a particular fascination for the connoisseur, for it is the name of a gemstone with blue to green tones of extraordinary vividness. It was not discovered until very recently, that is to say in the 1980s. The world has one man and his unshakable belief to thank for the discovery of this unique gemstone: Heitor Dimas Barbosa. Tirelessly, he and his assistants spent years digging in the pegmatite galleries of some modest hills in the Federal Brazilian State of Paraiba.

Heitor Dimas Barbosa was more than just someone looking for gemstones: and apart from that he wasn’t even looking for anything the existence of which had already been proved. The man was absolutely convinced that somewhere beneath the ‘Paraiba hill’ – famous today – he was going to find something ‘completely different’. And right he was. In 1981 he began with the first preparations for excavations at an old, dilapidated opencast mine.

He had one deep hole after another drilled in the hard ground – without success. But suddenly, five and a half years after the cut of the first spade, the first signs of a tourmaline find manifested themselves in the tangle of galleries, shafts and tunnels. Finally, in the autumn of 1989, a handful of the finest tourmaline crystals were brought up into the daylight from one of the many galleries – in colours of which people had so far only been able to dream. Unfortunately, just at that time, of all times, the ‘father of the Paraiba tourmalines’ was busy getting over an illness and was not able to be present at the mine.

Indeed the raw crystals were sold without his having seen them! When word of the find had got around, there was a period of frantic activity at the mine. For a further five years, the now-famous hill, only 400 metres long, 200 metres wide and 65 metres high, was combed, and even razed to the ground in places. But it was all for nothing. There is now hardly any expectation that further finds will be made.

It’s copper that makes the difference

Brazil is the classical country of tourmalines. Members of this splendid gemstone group come in practically all the colours of the rainbow. For a long time, however, a radiant turquoise was lacking – that is, until the discovery of that precious deposit in Paraiba.

Normally, iron, manganese, chrome and vanadium are the elements responsible for the beautiful colouring in tourmalines. The Paraiba tourmaline is different: it owes its splendid colour to copper, an element which has never before been observed in a tourmaline. Indeed quite a fair proportion of its weight consists of copper. But scientists have discovered that it often also contains manganese.

In the Paraiba tourmaline, the interplay between these two elements gives rise to a variety of fascinatingly beautiful colours: emerald green, turquoise to sky blue, sapphire blue, indigo, bluish-violet, and purple. Certain proportions in the mixture of copper and manganese can also result in pale grey to violet-blue tones.

Copper in high concentrations is responsible for the highly coveted radiant blue, turquoise and green hues, while violet and red tones are caused by manganese. By means of the burning technique, experienced cutters can eliminate the red colour components, with the result that only a pure copper colour remains.

However, the extraordinary vividness of the Paraiba tourmalines does not reveal itself until the stone has been cut. Faceted, they scintillate a really unusual ‘fire’ and appear to glow intensely even when there is very little light. That is why their colour is often referred to as ‘electric’ or ‘neon’. The aura of these treasures of Nature is both fresh and spirited at the same time.

The ‘swimming-pool-blue’ of a Paraiba tourmaline positively flashes with vivacity, and you don’t have to be an expert to see it.

Paraiba tourmalines are almost always quite small, since the beautiful cupriferous tourmaline crystals from the ‘noble hill’ in Paraiba were almost all fragments when they were discovered. Larger raw stones with a weight of over 5 grammes which had not cracked were rare, and only very few crystals had a weight exceeding 20 grammes.

For that reason you are very unlikely to find a large Paraiba tourmaline at a jeweller’s or gemstone merchant’s – quite apart from the fact that few specialist merchants actually offer this highly esteemed gemstone rarity at all.

The gemstone world was captivated from the very beginning by the beauty and spirited colours of the Paraiba tourmalines. In no time at all they achieved great popularity, and today they are among the most sought-after and most expensive gemstones in the world. Prices continue to climb, and have already reached a level which, earlier on, would not have seemed realistic for a tourmaline. Five-figure prices per carat are by no means exceptional for fine, large specimens from Paraiba.

Within a very short time, the market positively soaked up the modest supply of raw stones, which is thoroughly understandable, since Nature had created a gemstone which was peerless in terms of its colour and luminosity. And without Heitor Dimas Barbosa’s vision of finding something ‘completely different’, we would probably never even have known about it.

Is Paraiba in Africa too?

Strictly speaking, that would have been the end of the Paraiba story. But Nature does have the odd surprise up its sleeve. Since the beginning of 2001 the story has entered its sequel, though it is set in a different part of the world. In that year, some shining blue-green tourmalines from Nigeria suddenly appeared on the market, rather like the ones which had until then come only from Paraiba.

It was a real sensation: just like the Paraiba tourmalines, they didn’t reveal their true beauty until they had been subjected to a careful burning process. It is true to say that their colours are, in general, a touch lighter, but the difference is such that the layman will hardly notice it. Even the scientists have their work cut out to find features by which the difference can be told between tourmalines from Paraiba and copper tourmalines from Africa, for the chemism of the two kinds is also identical. Both of them get their beautiful colour from copper and manganese.

So how is this possible? Is Paraiba now in Africa too? Of course not. But this example of one of the most precious gemstones in the world does illustrate for us some of the evidence of continental drift. To get at the explanation, what we have to do is take a world atlas and have a look at the outlines of the South American continent and of Africa. If in our thoughts we shift the coastline of South America eastward, we will find that it fits the west coast of Africa like a piece in a jigsaw puzzle.

Nigeria nestles nicely by the north-east of Brazil. Thus we may suppose that the radiant copper tourmalines from Nigeria came into being under the same conditions as those from Paraiba, at a time before the ancient continent drifted apart. Is that the reason why it is so difficult to tell one from the other? This remains one of the great riddles in the fascinating world of gemstones.

Gemstone lovers, however, simply rejoice in the fact that there are tourmalines from Africa in a spirited greenish-blue on the market, as an alternative to the legendary Paraiba tourmalines.


chalos-shop is an established

chalos-shop is an established and dynamic family business that has been supplying affordable 100% natural gemstones and diamonds to thousands of customers in Europe, the USA and the rest of the world for over 30 years. Since the cancellation of the trade fairs due to the pandemic, we have introduced this weekly newsletter as a friendly and efficient way to communicate with our customers worldwide. We would therefore like to thank everyone who supported us and continued trading despite the uncertain times and we will continue to offer amazing and affordable gemstones and natural diamonds in the future!


Gemstone shopping trip

My gemstone shopping trip (in the time of Covid-19) in Afghanistan there raw material (crystals) and then onward journey over the Kalverpass to Pakistan, there I have the super grinders who made a simple crystal, a wonderful gemstone with high brialliant, such as for example : emerald, sapphire, peridot, kunzite, imperial topaz, tourmaline, garnet and many others,



Petra Diamonds completes restructuring

Petra Diamonds completes restructuring

Petra Diamond’s Finsch mine in South Africa (Image: Petra Diamonds.)

Petra Diamonds (LON: PDL) said on Wednesday it had completed its restructuring, aimed at recapitalizing the business, which involved new governance arrangements and cashflow controls.

Petra Diamonds
Petra Diamonds is a diamond producer based in the tax haven Jersey. The company, founded in 1997 by Adonis Pouroulis, has taken over five mines from de Beers. In 2015, 17.1 million tons of ore were mined, from which 3.2 million carats of diamonds were extracted. Petra Diamonds is currently exploring in the Kalahari in Botswana and at Reivilo near the Finsch Pit.

As part of the move, announced in October 2020, the miner has partially reinstated notes debt with holders of existing notes, contributing $30 million in new money.

Each of these will take the form of a new senior second lien note.

The new notes amount to about $337-million, and the remainder of the notes debt will be converted into equity, resulting in the noteholder group holding 91% of the enlarged share capital of Petra.

The diamond miner, which has just sold a 299.3 carat diamond for $12.18 million, also announced that the appointment to the Board as a non-executive director of Matthew Glowasky, has become effective immediately.

Fighting debt

Petra Diamonds began 2020 in a fragile financial state due to stagnant demand and heavy borrowing to expand its mines, particularly the iconic Cullinan.

Its weak position pushed Petra to put itself up for sale in June. The miner reversed the decision in October, opting instead for the debt-for-equity restructuring completed Wednesday.

Petra’s shares slumped by more than 80% last year as the covid-19 pandemic battered the global diamond sector, with mines forced to shut down while consumer demand continued to fall.

The diamond miner, which has three operations in South Africa and one in Tanzania, is also dealing with allegations of human rights abuses at its Williamson mine in Tanzania, resulting from the actions of its security guards.

Petra formed in February an internal committee to oversee an ongoing investigation on new abuse claims. The probe is being carried out by a specialist external advisor in conjunction with the company’s lawyers.



Cut diamonds and colored gemstones have been a popular and recognized form of investment for centuries. This is due, on the one hand, to the fact that gemstones have survived all previous financial and economic crises unscathed and, on the other hand, to their special mobility. A high-quality colored gemstone (e.g. ruby, sapphire, alexandrite, or emerald) with a weight of 5 carats – this corresponds to one gram – can have the same market value as a gold bar weighing 1 kg. For this reason, gemstones have often been given the title “ideal escape currency”.
This fact, as well as the fact that gemstones are not subject to wealth tax and are hardly affected by inflation, deflation or devaluation, makes them particularly attractive as an anonymous real asset investment!

Of course, gemstones can and should only represent part of the investment mix, but not everyone can or wants to invest in real estate, antiques or works of art and the international stock exchanges and financial markets are currently hardly classified as a safe haven. Even gold, the “crisis currency no. 1”, has seen clear downward trends after a record high.

Ruby, sapphire, alexandrite, paraiba, aquamarine, garnet and emerald should be mentioned in the foreground as a proverbial high-carat investment in the color stone area. In terms of quantity, their quality deposits are far below those of diamonds, which is unlikely to be a disadvantage for future price developments. We also recommend selected individual pieces of tanzanite, mandarin garnet, tsavorite and tourmaline, to name just a few examples. In addition, there are a large number of gemstone rarities, but the purchase of which should be reserved for expert collectors or industry experts. If you are only looking for a quick profit, you are not well advised with this form of investment, the decisive criteria here are definitely the factors of longevity and enjoyment of this uniquely attractive material.

When buying, you should make sure that the gemstones are within a price range that can be classified as resellable within the upper middle class. It makes relatively little sense to invest large sums in a single stone, which can then only be sold through one of the international auction houses – a selective distribution (which can take personal preferences into account) is better, whereby the quality of the gems always comes first must stand!

For those customers who are interested in particularly exquisite quality, we have worldwide contacts (India, Thailand, Sri Lanka, Brazil, Vietnam, Russia) with the best prices, selected premium gemstones (each certified twice). These treasures, which are predestined as solid and long-term capital investments, will be happy to present and advise you personally by appointment.

In contrast to colored stones, diamonds are subject to a worldwide calculation and valuation standard based on the US dollar. The international diamond business is dominated by a single group – this offers the advantage of a certain continuity, but also the disadvantage that “bargains” are hard to come by.

As a potential buyer of gemstones, you should only invest your money where, in addition to serious and competent advice, a third-party, independent expert opinion from a well-known institute (gemmological expertise) is provided free of charge. In addition to the detailed description and grading, this usually also includes a current assessment of the market value – this is also of great importance for insurance or notarial purposes and serves as an ideal estimate of the price demanded by the gemstone dealer.

If you are specifically interested in gemstones as an investment, you can also contact us by email or phone +306945895143


How you can make money with colored gemstones!

Shares too expensive? Bitcoin train departed? Gold and silver out? How about some colored gemstones? Sapphire, ruby ​​& Co. can be a useful and lucrative enrichment for the depot.

The auction lasted just under five minutes. And in the end there was a new record. A few days ago Sotheby’s auctioned one of the world’s most spectacular gemstones, a flawless pink diamond weighing 59.6 carats, in Geneva for around 62 million euros. It was previously called “Pink Star”, but its new owner, a diamond cutter from New York, officially renamed it “Pink Dream”.

Never before has a single diamond brought in such a sum at an auction. The previous record was almost 37 million euros and was only reached three years ago. Not only diamonds, but also classic colored gemstones – emeralds, sapphires or exotic such as the mandarin garnet – condense incredible values ​​in the smallest of spaces.

Many varieties are in such demand due to the global search for tangible assets that prices are skyrocketing everywhere. Anyone who deals with gemstones as an investment should, however, familiarize themselves intensively with the individual stones and the sometimes peculiar market rules.

In contrast to the diamond market, where a few large international corporations like De Beers set the prices, the market for colored gemstones is more diverse in the truest sense of the word. Prices usually react more quickly to supply and demand. In this respect, there is always something speculative about buying a gemstone.

Demand is dominated by China
If you want to get some glamor into the depot, you have to dig deeper into your pocket today than a few years ago. “The demand for high-quality colored stones is still unbroken and the price is absolutely dominated by the Chinese market,” says the Viennese gemstone expert Heinz Schiendl.

If you want to buy untreated, i.e. not burned rubies or the coveted Winza rubies, you have to reckon with a four- or five-digit amount – depending on the weight and quality. The prices per carat (equivalent to 0.2 grams) for good quality rubies are currently well over 2000 euros, often even over 3000 euros.

In addition to rubies, the closely related sapphires and emeralds are among the “standard values” among colored gemstones. The Detmold expert and author Johannes O. Vranek calls them “jewels”. The emerald in particular is one of the greatest classics and was already highly valued in ancient times.

It is reported about Emperor Nero, for example, that he is said to have regularly watched the fights of gladiators through a green emerald. It is not known whether the stone was used as a fashion accessory or as pragmatic sun protection. What is certain is that emeralds have been of stable value for centuries.

Stagnation in emeralds
In contrast to their green relatives, sapphires come in an impressive variety of colors. But they mustn’t be red, because then they would be rubies. Collectors and investors appreciate sapphires in the purest cornflower blue. Sapphires from ten carats upwards or in fantasy colors are suitable as capital investments.

The prices vary, depending on the weight and quality, between a few hundred euros and the equivalent of an upper middle class car. In the case of emeralds, on the other hand, there has been a stagnation in performance in recent years.

Investors who like things a little more speculative should take a look at the “small caps”. Some of their prices have exploded in recent years, mainly thanks to strong demand from China. “An eye-clean, 20-carat rubellite tourmaline in top color is currently around 500 euros per carat in European wholesalers. At a Chinese dealer, you get around 1,000 US dollars per carat for the same stone, ”says Heinz Schiendl.

Individual stones, such as the blue zircon, peridot and chrysoberyl from ten carats, are on a high price. This is an adjustment to the price development of stones with comparable colors, such as aquamarine or green tourmaline, with which one could earn a lot of money in the past few years.

Mandarin garnet was a stroke of luck
“Fine-colored aquamarines today cost almost twenty times what you had to pay in the 1970s”.

Mandarin garnet prices have also skyrocketed in recent years. Anyone who took hold of this gemstone 20 years ago and acquired very good qualities should have multiplied their wealth since then. Alexandrite is also one of the investment stones. “An extremely rare variety of Chrysoberylle”,

Interesting buy signals are also coming from the USA. The American Gem Traders Association (AGTA) recently named tanzanite, sapphire and aquamarine as the trend stones of tomorrow. Tanzanite is particularly popular in the USA. As a result of the financial and economic crisis, trade in these gemstones there has declined significantly in recent years.

In the meantime, the demand is rising again, while the supply of these top stones is scarce. Around Kilimanjaro, attempts are being made in some places at a depth of 100 meters to wrest the last remnants of these treasures from the earth, but technology is gradually reaching its limits. Large alternative sites are not yet known.

Larger stones are considerably rarer

The coveted Paraiba tourmalines in excellent quality, the prices of which have increased almost tenfold in just a few years, are among the outperformers among the “small caps”. Today you have to reckon with high four-digit carat prices for point stones in wholesale.

The criteria for assessing the quality of colored gemstones are similar to those for diamonds. Of course, the price of a colored gemstone depends on its weight. A sapphire with over three carats will always cost disproportionately more than a 1.5 carat with a comparable color and purity, simply because the larger stones are considerably rarer. And the color of the stones also determines the price.

But when it comes to purity, colored gemstones are different from diamonds. Flawless diamonds or those with “very, very small inclusions” usually fetch the highest prices. Anyone interested in colored gemstones will come across the term “eye clean”. It states that the specialist cannot detect any inclusions with the naked eye (and not under a magnifying glass with ten times magnification as with diamonds).

In addition, inclusions in colored gemstones are considered to be “fingerprints of nature”. They give clues as to the authenticity and origin of the stones. The finest inclusions in sapphires and rubies are responsible for particularly interesting light reflections – the so-called asterism effect.

Certificates are essential
Depending on the incidence of light, this usually creates a six-pointed star image on the surface of the gemstone. So while inclusions usually significantly reduce the value of a diamond, with colored gemstones the very personal feeling decides on a quality assessment of inclusions.

Certificates from recognized gemological institutes are essential for investment gemstones. In addition to a detailed description and grading, this expertise often also includes a current assessment of the market value, which is important for insurance reasons.

But for the investor it is not only the emotional return and the pride of ownership that count. The main question that arises for him is whether it still makes sense to invest in colored gemstones after the price increases in recent years. As in Nero’s time, this is supported by the rarity of high-quality stones. “Even with the best international contacts to miners and exporters, it is at best possible to replace two out of three stones sold equally”, says Heinz Schiendl.

A high demand therefore meets limited resources. “If this trend continues, most of the gemstones will rightly bear this name again, because only a few customers will be able to afford the extreme price level.” Perhaps now is the last opportunity to shop a little of the Roman antique glamor.


Alrosa finds first large coloured diamond at new Yakutia mine

Russia’s Alrosa (MCX:ALRS), the world’s top diamond miner by output, has found a 17.4-carat bright yellow gem-quality precious rock at its new Verkhne-Munskoye deposit in Yakutia, which started operations in 2018.

Alrosa finds first large coloured diamond at new Yakutia mine

The diamond, recovered in mid-February from the Zapolyarnaya kimberlite pipe, is the first large coloured stone found at the site, the company said.

Alrosa, which did not disclose the estimated value of the diamond, said it would be assessed and evaluated by its experts in coming days.


Diamond miners and traders have been hit hard in the past year by weak market conditions. These factors have taken a major toll on producers of small stones due to an oversupply in that segment.

De Beers reported Thursday its worst set of earnings since Anglo American (LON:AAL) acquired it in 2012.

The world’s No. 1 diamond miner by market cap said demand for rough diamonds from polishers and cutters was weak last year due to the impact of US-China trade tension and the closure of US retail outlets. Many companies in the so-called midstream are struggling to obtain financing, it said.

Alrosa believes the situation is about to change as it’s already seeing the first signs of stabilization in the sector.

Increasing demand for synthetic diamonds has also weighed on prices. Man-made diamonds require less investment than mining natural stones and can offer more attractive margins.

Industry consultant Bain & Co., however, believes that while glut that’s depressing the diamond market will probably be cleared early this year, it will take at least another 12 months for the market to fully recover.

“The industry’s first and strongest opportunity to rebalance and regain growth will be 2021,” said Bain in a report released in December, adding that supply could fall 8% that year.



Orders, such as calibrated stones, or jewelry

We are happy to take orders such as calibrated stones or unusual cuts.
1. Calibrated gemstones,
2. Fantasy cuts,
For wholesalers, retailers, jewelers, goldsmiths. ( From India, Pakistan, Afghanistan, Thailand, Vietnam….)

We are happy to take orders for jewelry production.
1. Gold jewelry in 333 / 9K, 585 / 14K, or 750 / 18K
2. Silver jewelry minimum 10pcs.
For wholesalers, retailers, jewelers, goldsmiths, private.
The jewelry is made in Greece according to European Union guidelines.

For more information contact us.

We are happy to take orders, such as calibrated stones, or fancy cuts, as well as jewelry production, also for jewelers every kind of jewelry production, production in greece according to EU guidelines. Just contact us.




Gemstones Investment: Investing in diamonds, rubies, sapphires and emeralds

Can precious stones really hold a candle to coins and precious metal bars as investment alternatives? Diamonds are fascinating products of nature and are being discovered by more and more precious metal investors. Synthetic diamonds are also sold, but the gemstones are only really valuable if they were created by natural chance. If the cut, color, clarity and carat number are also right, a gemstone is a real alternative to gold and silver for some investors.

At first glance, precious stones have nothing more in common with precious metals than the first syllable. Nevertheless, they should not be forgotten when taking a comprehensive look at the market for precious raw materials, after all, similar techniques are used in the extraction of precious stones, and precious stones have a similar meaning to the jewelry industry as gold and silver – for some, the gold chain with a sparkling Diamonds are really beautiful and valuable.

Diamonds, rubies, sapphires and emeralds as investments
So it is not surprising that diamonds are also suitable as an investment. Four properties play a role in their evaluation: the weight (measured in carats), the color, the purity and the cut. On the other hand, the origin of the gemstone plays a subordinate role. The ruby, sapphire and emerald are considered particularly rare. The valuation of a stone is a practically impossible undertaking for laypeople, as even small imperfections can cause price differences in the five-digit range in extreme cases. In addition, there are many well-made fakes that are usually recognized immediately by experts, but can easily slip through to a layperson.

Precious stones as an investment: does it pay off for normal investors to invest in diamonds, sapphires, rubies, emeralds and other precious stones?
Investing in Gemstones: Short-term gains unlikely
Buying a gemstone should normally not be an option for the average consumer for investment purposes. The vast majority of the stones offered are not suitable for long-term investment and are of little interest to jewelry manufacturers. In addition, there are no short-term profits to be made with gemstones because of the fixed trading costs. And the typical motivation for buying gold and silver – protection against inflation and recession – does not fit in with buying a gem, because in a recession, the demand for luxury items is likely to collapse.

Anyone who nevertheless wants to invest part of their assets in gemstones is well advised if they do not invest too large amounts in a single stone – stones that can also be processed by the medium-sized jewelry industry are particularly easy to sell. All too sensational rarities, which can only be sold through international auction houses, can easily plummet in value if no enthusiast can be found.

Carat, Color, Clarity and Cut: Selection criteria for diamonds
Coin collectors pay attention to the surface of their treasures, postage stamp lovers take a close look at the points – but how do experts decide on the quality of a diamond? The most important criteria can be summarized in a simple formula: Four terms, all of which begin with the letter “c”, represent the most important points of reference. Carat, Color, Clarity and Cut are the measure of all things on the diamond market. They provide information about how expensive a diamond really is:

Cut diamonds are natural products. People only intervene when the diamond is cut – because it is the cut that creates the shine and shine with which diamonds have become the epitome of wealth and prosperity. The cut is an art in itself, correct proportions and the arrangement of the facets determine the appearance of the diamond. A distinction is made between four quality levels between “very good” and “poor”.
Color The diamond is actually referred to as a colorless stone – but if you look into the window of a jeweler, you will discover practically all the colors of the rainbow. In fact, very fine white is extremely rare, as is diamonds with a pure color. Yellow gemstones are particularly common. Today there are a total of eleven color classes.

Clarity No impurities are tolerated in a valuable gemstone. It is completely normal that a diamond, as a natural product, also contains inclusions of non-crystallized carbon. Nevertheless, it is true that the purity of a diamond also determines its value and the diamond becomes more valuable with increasing purity. The purity is assessed in six stages.
Carat This unit determines the weight and therefore also the size of a diamond. One metric carat is exactly 0.2 grams or 100 points. The price of a diamond is calculated using the number of carats.