Black Onyx 22 x 13mm Pear Cabochon Slices, Dyed Natural |Sold by Pair | 79540

Stone size: 22 x 13mm 
Stone shape: Pear 
Material: Onyx 
Stone type: Natural 
Color: Black 
Mohs hardness: 6.5–7 
Refractive index: 1.53–1.54 
Specific gravity: 2.55–2.70 
Treatment: Dyed (D) 
Cutting center: India 

Sliced from dyed black onyx (approximately 4mm thick), this irregular pear-shaped cabochon is finished on both sides: one side is faceted all over, the other has a polished flat face and a faceted edge. This unique cut and opaque black color of this matched pair make them ideal for wire-wrapped designs.

Onyx, a type of opaque chalcedony, is naturally black and is generally dyed to achieve a more uniform color—it is the most common black gemstone and is popular for creating a striking centerpiece and for adding contrast to designs that include lighter and/or more colorful stones. It is a hard stone and takes a high polish; since ancient times, onyx has been a favorite stone for carving.

please note:
• Care: Clean with warm, soapy water. Ultrasonic and steam cleaning are usually safe.