Sardonyx Facts

Sardonyx Facts

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Sardonyx Facts

Chemical Composition Chemical composition is Silicon Dioxide [ SiO2] .
Colours Main colour is orange red. Other colours are yellow, brown, purple, gray, pink and green.
Band Colours Reddish brown, white, brown, black and many more.
Hardness 6.5 – 7 Mohs
Specific Gravity 2.65 – 2.66
Refractive Index Varies between 1.543 to 1.554
Solid State Translucent to opaque
Bi-refringence 0.009
Phenomena None
Fractures Very less
Enhancement Usually it is dyes or stained.
Source Found worldwide. Few countries to name are India, Pakistan, USA, Germany, Brazil, Mexico, Czechoslovakia and Africa.
Precautions Avoid sharps blows , large temperatures changes and harsh chemicals.