mineral

Yellow Quartz (Citrine/Gold Quartz)

Silicon Dioxide (SiO2)

Hardness: 7 on the Mohs scale. Color: Yellow to brownish-gold. Luster: Vitreous (glassy). Crystal structure: Trigonal/Hexagonal. Cleavage: Indistinct/Conchoidal fracture. Specific Gravity: 2.65.

Hardness: 7 on the Mohs scale
Color: Yellow to brownish-gold
Luster: Vitreous (glassy)

Identified March 28, 2026More mineral →

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Physical properties

Hardness: 7 on the Mohs scale. Color: Yellow to brownish-gold. Luster: Vitreous (glassy). Crystal structure: Trigonal/Hexagonal. Cleavage: Indistinct/Conchoidal fracture. Specific Gravity: 2.65.

Formation & geological history

Formed in igneous and metamorphic rocks, particularly in pegmatites or hydrothermal veins. This specimen shows signs of alluvial weathering (tumble-polished shape by water). It can range from Precambrian to recent geological eras.

Uses & applications

Used primarily in jewelry as a semi-precious gemstone, in crystal healing practices, and as decorative stone in landscaping or interior design.

Geological facts

Natural yellow quartz is actually quite rare in nature; most commercial 'Citrine' is actually heat-treated amethyst or smoky quartz. It is known as the 'Success Stone' in folklore.

Field identification & locations

Identify by its ability to scratch glass (hardness 7) and its lack of cleavage planes. Commonly found in riverbeds, beaches (as pebbles), and mountainous regions globally, including Brazil, Madagascar, and the USA.

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