Yellow Sapphire or Citrine

Physical Properties

Hardness 9 (Sapphire) or 7 (Citrine) on Mohs scale, yellow color, vitreous luster

Formation & Geological History

Formed in igneous or metamorphic rocks (Sapphire) or hydrothermal veins/pegmatites (Citrine)

Uses & Applications

Used primarily in jewelry as a faceted gemstone

Geological Facts

Yellow sapphires are highly valued in Vedic astrology. Citrine is the traditional birthstone for November.

Field Identification & Locations

Identified by hardness testing and refractive index. Commonly found in Sri Lanka, Madagascar (Sapphire) or Brazil (Citrine)

Identified on: 4/27/2026

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