gemstone
Yellow Sapphire
Corundum (Al2O3)
AI-generated identification · may be incorrectHardness of 9 on the Mohs scale, vitreous to adamantine luster, trigonal crystal system, and lack of true cleavage with distinct parting.
Identified More gemstone →
Explore Yellow Sapphire in the encyclopedia →Identify your own rocks.
Get a report just like this from any photo, free.
Physical properties
Hardness of 9 on the Mohs scale, vitreous to adamantine luster, trigonal crystal system, and lack of true cleavage with distinct parting.
Formation & geological history
Formed in metamorphic or igneous rocks like pegmatites and marble through high-temperature regional or contact metamorphism.
Uses & applications
Used primarily in fine jewelry and as a gemstone for investment and collection.
Geological facts
Yellow sapphires get their vibrant color from trace amounts of iron substituting for aluminum within the crystal lattice.
Field identification & locations
Plausible in Southeast Asian regions like Malaysia and Thailand due to alluvial gemstone deposits; identify via high hardness and strong scratch resistance.
More like this
Other gemstone specimens
Gemstone Ring
N/A - Set piece of jewelry, likely Amethyst or Garnet with Diamond or CZ
gemstone
Ammolite
Ammolite (Biogenic Aragonite with trace elements; fossils of Placenticeras meeki and Placenticeras intercalare)
mineral
Topaz
Al2SiO4(F,OH)2
mineral
Amber
Succinite (Organic Gemstone)
mineral
Diamond and Gold Jewelry
Carbon (Diamond) / Au (Gold)
gemstone
Red Jasper
Silicon Dioxide (SiO2) with Hematite inclusions
sedimentary