Description

About Opal!

Opal is an amorphous form of silica, chemically similar to quartz, but containing 3% to 21% water within its mineral structure. Gem grade opals usually have 6% to 10% water content. Opal is a sedimentary stone. Under the proper conditions, water percolates through the earth, becoming rich in dissolved silicates

However opals are unique because they display a rainbow-like display due to their intrinsic microstructure which diffracts white light into all the colours of the spectrum

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