Zircon · Zircon

Colourless Zircon

Colourless zircon, the old 'Matura diamond', is heat-treated high-type material whose fire and adamantine lustre made it the diamond substitute of earlier centuries. Doubling, SG and the 653.5 nm line separate it from every simulant.

Colour
colourless to white

Transparency
Transparent

RI
1.925–1.984

SG
4.60–4.73

Mohs
6.0–7.5

Birthstone
December

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Colourless Fluorite Synthetic Rutile YAG Colourless Orthoclase

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