What are Onyx?
What exactly are Onyx?
The definition of a Onyx is as follows:
The word Onyx derives from the Greek meaning 'veined gem'
Pure black onyx is the most famous variety, but not as common as
onyx with banded colors
Onyx contains bands of colors of white, tan, and brown
Sardonyx is a variant in which the colored bands are sard (shades of
red) rather than black
Many semi-precious gemstones are in fact forms of chalcedony including Agate, Onyx,
Sardonyx, Carnelian and the Bloodstone.
A chalcedony with alternating black and white bands is often used in making
cameos. Chalcedony is form of
silica which is composed of very fine intergrowths of the minerals
quartz and moganite and has a waxy lustre and might be
semitransparent or translucent.
Onyx is defined as a variety of quartz
Quartz goes by an array of different names including
Sardonyx, Aventurine, Tiger's eye, Amethyst,
Citrine, Prasiolite, Rose quartz,
Bloodstones, Milk quartz, Smoky quartz and
The Colors of Onyx
Onyx come in a wide range of natural colors and shades
with bands of colors of white, tan, and brown.