Citrine is yellow to orange quartz. Much commercial citrine is heat-treated amethyst. Natural citrine is the same mineral species, SiO2, and is used in beads and cut stones.
This page is only for Citrine. Comments below are for this material.
Robert M. Lavinsky, via Wikimedia Commons
Citrine
Specimen Details
- Hardness (Mohs): 7
- Chemical Formula: SiO2
- Crystal System: Trigonal
- Size: Specimen size varies; record the piece, not the species