Curated Collection
Exquisite
Ceylon Star Sapphires
Star sapphires exhibit asterism—a rare optical phenomenon where needle-like rutile inclusions reflect light into a sharp, floating six-ray star gliding across the cabochon surface.
Mineral
Corundum with Rutile Silk inclusions
Mohs Hardness
9.0
Refractive Index
1.762 – 1.770
Primary Origin
Sri Lanka
Buying Guide & FAQs
Heating a star sapphire typically melts the microscopic rutile silk needles, destroying the star. Consequently, genuine star sapphires with sharp rays are almost universally unheated.
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