mineral

Yellow Quartz (Citrine or Yellow Jasper)

Silicon Dioxide (SiO2)

Hardness: 7 (Mohs scale); Color: Pale yellow to golden honey; Luster: Vitreous to waxy; Crystal Structure: Trigonal/Hexagonal; Cleavage: None/Conchoidal fracture; Specific Gravity: 2.65

Hardness: 7 (Mohs scale)
Color: Pale yellow to golden honey
Luster: Vitreous to waxy

Identified April 11, 2026More mineral →

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Physical properties

Hardness: 7 (Mohs scale); Color: Pale yellow to golden honey; Luster: Vitreous to waxy; Crystal Structure: Trigonal/Hexagonal; Cleavage: None/Conchoidal fracture; Specific Gravity: 2.65

Formation & geological history

Formed through the crystallization of silica-rich hydrothermal fluids in igneous rocks (pegmatites) or sedimentary environments. Tumbled stones like this are often smoothed by river action or mechanical rock tumblers.

Uses & applications

Used primarily injewelry, lapidary arts, metaphysical/crystal healing, and as decorative gravel or collector's specimens.

Geological facts

Natural citrine is rare; many yellow quartz specimens in the market are actually purple amethyst that has been heat-treated to change its color. Yellow quartz is often called the 'Merchant's Stone' in folklore.

Field identification & locations

Identify in the field by its hardness (will scratch glass), lack of cleavage, and translucent to opaque yellow hue. Commonly found in Brazil, Madagascar, and the USA.

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