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Onyx

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Why Buy Onyx Stone From GemFame?

We Have Various types of Colors, Shapes, Sizes, Pairs, Lots, Cut Stones and Cabochons in Onyx stone at reasonable price. Onyx is also comes in Parallel Color Bands, Black Onyx, White Onyx, Red Onyx, Green Onyx, Blue Onyx Etc.,

About Onyx Stone

Onyx stone is an ancient gemstone, Have been using in jewelry and as an ornamental gemstone for carvings since antiquity. Onyx has traditionally been one of the most important engraving and cameo gemstones, where its most common form was a black base with a white upper layer. Although still used a minor gemstone today, the significance and value of Onyx has been diminished as compared to ancient times.

When Onyx is banded black and white, it can be jointly classified as both Agate and Onyx. However, many require Onyx to have banding in roughly parallel lines, whereas other forms of Agate can have wavy or concentric forms of banding.

Properties of Onyx Gemstone

Chemical Formula SiO2
Color White, Black, Banded, Red, White, Blue, Brown
Hardness 7
Crystal System Hexagonal
Refractive Index 1.54 – 1.55
SG 2.63 – 2.65
Transparency Translucent to opaque
Double Refraction .009
Luster Vitreous
Cleavage Indiscernible
Mineral Class Quartz (Chalcedony)
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