Pink Sapphire
Corundum var. Pink Sapphire · Precious Gemstone
Crystal System
Trigonal; typically occurs in hexagonal barrels, bipyramidal crystals, or rounded pebbles in alluvial deposits.
Mineral Group
Oxides (Hematite group)
Chemical Formula
Al2O3 (with trace amounts of Chromium)
Formation Process
Forms primarily in metamorphic rocks like marble or gneiss, and in aluminum-rich igneous environments such as pegmatites or syenites.
About This Crystal
A vibrant pink, transparent faceted gemstone with a vitreous (glass-like) luster. It exhibits high clarity with minor internal facet reflections and a saturation ranging from pastel to deep magenta.
Physical Characteristics
Color: Pink; Streak: White; Cleavage: None (has parting); Fracture: Conchoidal to uneven; Specific Gravity: 3.98-4.06; Fluorescence: Often strong orange-red under UV light due to chromium.
Optical Properties
Refractive Index: 1.762-1.770; Birefringence: 0.008; Pleochroism: Weak to moderate (violet-pink to orange-pink); Uniaxial negative.
Hardness & Durability
Origin Region
Notable sources include Madagascar, Sri Lanka, Myanmar (Burma), and East Africa (Tanzania, Mozambique).
Hardness & Durability
Mohs Hardness: 9 (top of the scale after diamond); Excellent toughness and stability, making it ideal for daily jewelry wear.
Care & Maintenance
Highly durable; can be cleaned with ultrasonic cleaners, steam, or warm soapy water. Resistant to most acids and heat, though should be stored away from diamonds.
Rarity & Value
Valuable and sought-after; value is driven by color saturation and clarity. Natural, untreated stones are rare and command high prices. Heat treatment is a standard industry practice.
Special Characteristics
Can exhibit color-zoning, silk inclusions (rutile), and occasional fluorescence that adds a 'glow' to the stone in daylight.
Lore & History
Historically associated with wisdom and royalty. In cultural lore, pink sapphires symbolize love, forgiveness, and emotional strength. Often linked to the Heart Chakra in traditional crystal healing.