Rock Identifier
Citrine (Silicon Dioxide (Quartz variety)) — gemstone
gemstone

Citrine

Silicon Dioxide (Quartz variety)

AI-generated identification · may be incorrect

Hardness of 7 on the Mohs scale, yellow to brownish-orange color, vitreous luster, hexagonal crystal system, and conchoidal fracture with no cleavage.

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Physical properties

Hardness of 7 on the Mohs scale, yellow to brownish-orange color, vitreous luster, hexagonal crystal system, and conchoidal fracture with no cleavage.

Formation & geological history

Formed through the hydrothermal crystallization of quartz or the heat treatment of purple amethyst, found globally in igneous and metamorphic environments.

Uses & applications

Widely used in high-end fine jewelry, decorative carvings, and as a popular collector specimen.

Geological facts

Natural citrine is relatively rare, with most commercial citrine produced by heating low-grade amethyst or smoky quartz.

Field identification & locations

Easily identified by its distinct golden-yellow hue and quartz hardness; major deposits are found in Brazil, Madagascar, and the USA.