Priyantha Gems

12/06/2025

31/01/2025

08/06/2023

01/01/2023

16/12/2022

The mineral chrysoberyl has two of the world's most sought-after gem varieties—alexandrite and cat's-eye chrysoberyl. This impressive 212.76 carat cat's-eye alexandrite combines the fascinating color-change of alexandrite with the mysterious cat's-eye effect of cat's-eye chrysoberyl!

Photo: Felix Wong/South China Morning Post via Getty Images

13/10/2022

White sapphire 🤍
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05/10/2022

Padparscha sapphire
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30/09/2022

This 2.46 carat sapphire displays a stunning array of soothing colors. Sapphire is a variety of corundum, which is composed of aluminum and oxygen. In its purest form, it is colorless. But when its crystal structure contains trace elements, it can cause corundum to be different colors. For example, iron and titanium can cause blue sapphire.

Sapphires that show combinations of different colors, called parti-color sapphires, are unusual because they contain different trace elements in different parts of their crystals. How many colors do you count in this sapphire?

Courtesy: Philip Zahm Designs. Photo: Jeff Mason.

16/08/2022

02/08/2022

Precious Gleam

27/06/2022

Cat’s-eye effect, or chatoyancy, is a very special optical phenomenon. It refers to the effect that shows a bright band of light on a gemstone’s surface, which resembles the eye of a cat. This effect comes from a gemstone’s abundant needle-like inclusions, rutile crystals or hollow tubes, which scatter the light. This effect is best displayed when the gemstone is fashioned into a cabochon.
In general, only the chrysoberyl with cat's-eye effect can be directly called cat's-eye. Its body colour ranges from yellow, yellowish-green, to green.
Another rare type of cat’s eye gemstone is cat’s-eye alexandrite, which on top of its colour-changing effect, displays a cat’s-eye effect. It is one of the most sought-after gems for collectors.
The cat’s-eye effect is not limited to a single type of gemstone; on rare occasions, emerald, tourmaline, quartz, spinel, etc. can also display this phenomenon.

08/06/2022