mineral

Jadeite and Assorted Corundum (Ruby/Sapphire) / Beryl (Emerald)

Jadeite (NaAlSi2O6), Ruby/Sapphire (Al2O3), Emerald (Be3Al2(SiO3)6)

Hardness: Jadeite 6.5-7, Corundum 9, Emerald 7.5-8. Colors: Green, Red, Blue. Luster: Vitreous to greasy. Crystal Structure: Monoclinic (Jade) and Hexagonal/Trigonal (Gemstones).

Hardness: Jadeite 6
Luster: Vitreous to greasy

Identified January 23, 2026More mineral →

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Physical properties

Hardness: Jadeite 6.5-7, Corundum 9, Emerald 7.5-8. Colors: Green, Red, Blue. Luster: Vitreous to greasy. Crystal Structure: Monoclinic (Jade) and Hexagonal/Trigonal (Gemstones).

Formation & geological history

Jadeite forms in metamorphic rocks under high pressure and low temperature conditions. Corundum (Ruby/Sapphire) and Emerald (Beryl) form in igneous pegmatites or metamorphic skarns through hydrothermal processes.

Uses & applications

Primary use is in high-end jewelry and ornamental carving. They have significant value in the gemstone market and as collector specimens.

Geological facts

Jadeite is the most precious form of jade, highly prized in Asian cultures. Rubies and Sapphires are varieties of the same mineral, corundum, distinguished only by color.

Field identification & locations

Identify by specific gravity and refractive index using gemological tools. Found in Myanmar (Jade), Sri Lanka, Madagascar, and Colombia (Emerald). Look for color saturation and internal inclusions in the field.

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