Gemstone profile and identification guide
Star Ruby
Star Ruby is a Red, Crimson oxide (corundum) prized for its distinctive beauty, historic appeal, and use in fine jewellery and collector pieces.
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Overview
Star Ruby is a Red, Crimson oxide (corundum) prized for its distinctive beauty, historic appeal, and use in fine jewellery and collector pieces.
Use this profile as a collector reference and educational guide for quick on-page comparison, then validate with the interactive identification system.
Identification
Name: Star Ruby
Scientific classification: Oxide (Corundum)
Hardness: 9 Mohs
Transparency: transparent
Lustre: metallic
Crystal system: Trigonal
Primary colour: Burgundy
Secondary colour: Red
Colour family: Reds & Pinks
Physical Properties
Hardness category: very hard
Hardness value: 9 Mohs
Chemical composition: Aluminum oxide with chromium (Al2O3:Cr)
Crystal system: Trigonal
Common locations: Myanmar, Thailand, Mozambique, Madagascar
Learn more: Gem-A gemstone education resources.
Colour Variations
Star Ruby is classified within the reds & pinks palette. Primary colour: burgundy. Secondary colour: red. Optical effects: Asterism.
Optical effects: Asterism
Formation
Formed in metamorphic marble and alluvial deposits through high pressure and chromium-rich fluids.
Origin
Myanmar, Thailand, Mozambique, Madagascar
Uses
Best for: Durable centerpieces for rings and daily wear.
Ideal uses: High-impact settings and heirloom designs.
Care
Clean with warm water and mild soap; avoid prolonged exposure to heat and harsh chemicals.
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Star Ruby FAQ
How can I identify Star Ruby?
Compare hardness (9 Mohs), crystal system (Trigonal), colour profile, and lustre (metallic) with your sample. Then cross-check related gemstones listed above.
What colour range does Star Ruby appear in?
Star Ruby is classified within the reds & pinks palette. Primary colour: burgundy. Secondary colour: red. Optical effects: Asterism.
Where is Star Ruby commonly used?
High-impact settings and heirloom designs.. For maintenance, follow the care guidance in this profile.
Scientific References
Reference data from GIA and Mindat mineral records.