Citrine Quartz

Physical Properties

Hardness: 7 (Mohs), Color: pale yellow to golden brown, Luster: vitreous (glassy), Crystal System: Trigonal/Hexagonal, Cleavage: None/Conchoidal fracture, Specific Gravity: 2.65

Formation & Geological History

Formed in igneous and metamorphic environments, specifically in pegmatites or hydrothermal veins where silica-rich fluids cool. Natural citrine gets its color from ferric iron impurities.

Uses & Applications

Primarily used as a semi-precious gemstone in jewelry (rings, pendants) and widely collected for metaphysical purposes or mineral displays.

Geological Facts

Natural citrine is rare; most commercial citrine is actually heat-treated amethyst or smoky quartz, which turns a bright orange-yellow when baked.

Field Identification & Locations

Identify by its hardness (scratches glass), glassy luster, and lack of cleavage. Often found in Brazil, Madagascar, and Russia. Look for iron-stained quartz crystals in quartz veins.

Identified on: 5/13/2026

Mode: Standard