Citrine

Citrine is the yellow or golden yellow variety of quartz. The yellow color is due to the presence of iron. That is also responsible for the name, derived from the word ‘citrus.’ Natural citrine is usually a pale yellow, but rare. Most citrine on the market is heat-treated amethyst.

Citrine has been used to imitate topaz. It was once called Brazilian topaz.

Occurrence

Gem-quality citrine is extremely rare. The best stone is found in Brazil, Spain, Madagascar, and the former USSR.

Citrine Properties

• Specific Gravity: 2.65
• Refractive Index: 1.54-1.55
• Birefringence (DR): 0.009
• Luster: Vitreous
• Crystal Structure: Trigonal
• Composition: Silicon dioxide
• Hardness: 7

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