Gemstone Guide

 

Birthstone of August
Crisp and clean, black onyx is the ideal gem for jewelry minimalists. The solid black stone compliments all metals and colors.

Black Onyx

Crisp and clean, black onyx is the ideal gem for jewelry minimalists. The solid black stone compliments all metals and colors.Read More

Color Sophisticated Black
Gem Species Chalcedony
Hardness 7
Toughness Excellent
Stability Good
Clarity Opaque
Common Inclusions Generally not visible due to opaqueness
Crystal System Trigonal, Monoclinic
Enhancements Dye
Gemstone Care Avoid Steam Cleaning,Ultrasonic Cleaner with Caution,Soap, water, and soft brush
Chemicals to Avoid Hyrdofluoric Acid, Ammonium Fluoride, and Alkaline Solutions
Note *Do not use harsh chemicals or ultrasonic cleaners at home*
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