Gemstones and jewellery stones

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If you are looking for gemstones and jewellery stones, such as diamonds, tanzanites, tourmalines (in the variations rubellite, verdelite or indigolite), rubies, sapphires, emeralds, aquamarines and real zircons, then OpusOpal is the right place for you.

We are constantly on the lookout for top gems and jewellery stones and take hold when we are convinced that we can add a top gemstone to our shop. All gemstones are subjected to very strict controls regarding quality, purity, brilliance, cut, symmetry and polish. The stones are first examined with the naked eye. Once they have passed the first hurdle, they are checked for authenticity. On the one hand, this is done using a refractometer test, which measures the specific refraction of light of the gemstone to be examined. In many cases, gemstones are birefringent, so that they must also have this property in the gemstone specific refraction index. On the other hand, the stones are then examined under 50x magnification for impurities and features that indicate a fake. Rubies and sapphires, for example, are often found to contain air bubbles. This then shows us quite clearly that it is an artificial gemstone that was grown in the laboratory. Especially with rubies and sapphires, we then go one step further, even with very expensive stones, and have them certified by a geological institute.


Diamonds are a girl's best friends and the jewellery stones par excellence. But also men like it ;-). We buy our diamonds exclusively in Antwerp. We receive certified diamonds or diamonds without certificates directly from our local diamond dealer with whom we have been working for several years now and have had no reason for complaint so far.

Colour gemstones

Gemstones such as Tanzanite, Tourmaline (in the variations Rubellite, Verdelite or Indigolith), Rubies, Sapphires, Emeralds, Aquamarines, Topaz and many more we can now purchase directly from Thailand through two excellent trading partners. Be curious what you will find in our shop in the future. It will take your breath away.