JDMISGem Reference
Quartz · Quartz

Rock Crystal

Rock Crystal — Quartz

Rock crystal is pure colourless quartz - water-clear, abundant and historic, from crystal skulls to modern carved beads. It is the reference gem for quartz optics.

Colour
colourless to white
Transparency
Transparent
RI
1.544–1.553
SG
2.64–2.69
Mohs
7.0
Birthstone
February · November
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