Padparadscha Sapphire

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While sapphires have mesmerized gem and jewelry connoisseurs since the dawn of time, one fancy sapphire variety has a distinct allure and prestige all its own--the mysterious and coveted padparadscha sapphire. The padparadscha derives its name from the Sanskrit "padma ranga" meaning "lotus color," for its resemblance to the beautiful and famed lotus flowers of Sri Lanka, where the gem was originally found. Padparadscha sapphires traditionally must combine elements of pink and orange in one gem to rightly claim their padparadscha title, though the coloration requirements are highly disputed.

Padparadscha Sapphire Polished
Padparadscha Sapphire Classification
Common Name Padparadscha Sapphire
Species Corundum
Padparadscha Sapphire Optical Properties
Transparency Transparent - Opaque
Dispersion Strength: Weak Fire Value: 0.018
Refractive Index 1.762-1.770
Tolerance:(+0.009/-0.005)
Birefringence 0.008-0.01
Optic Character Uniaxial
Optic Sign Negative
Polariscope Reaction Doubly Refractive (DR)
Fluorescence SWUV: Inert
LWUV: Orange:Inert to strong orangy red
Pleochroism Dichroic, strong yellowish orange and colorless
Padparadscha Sapphire Characteristic Physical Properties
Hardness 9
Streak White
Specific Gravity 3.950-4.100 Typical:4.000
Toughness Excellent
Inclusions This stone has type II clarity and sometimes will have silk, rutile, boehmite or zircon crystals and fingerprint inclusions. Stones can show hexagonal growth and color zoning. Untreated stones will usually have inclusions intact. Heat treated stones will have fracture halos or snowballs around crystal inclusions( untreated stones from magmatic areas might also show these characteristics). Silk will be broken and might show sintered areas especially around the girdle.
Luster SubAdamantine, Vitreous
Stability Very Good
Fracture Conchoidal
Cleavage None
Padparadscha Sapphire Chemistry & Crystallography
Chemical Name aluminum oxide
Chemical Formula Al2O3
Crystal System Trigonal
Chemistry Classification Oxide

Padparadscha Sapphire Colors

  • Brown Padparadscha Sapphire Brown
  • Red Padparadscha Sapphire Red
  • Orange Padparadscha Sapphire Orange

Countries of Origin

Tanzania, United Republic Of; United States of America (the); Unknown; Malawi; Sri Lanka; China; Russian Federation (the); Madagascar; Switzerland; India

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Tim Matthews

Author

Tim Matthews

Tim Matthews is President and Chief Executive Officer of Jewelry Television® (JTV), as well as a member of the company's Board of Directors. He oversees and leads all aspects of the company's powerful omni-digital retail platform that uniquely specializes in fine jewelry and gemstones. His passion for business and gemstones has led him to become a recognized expert in the field of gemology. He is a life member of the Gemmological Association of Great Britain (Gem-A) and has earned Gem-A's highest degrees, the Gemmology (FGA) and Diamond (DGA) diplomas. He is also a Graduate Gemologist (GG) of the Gemological Institute of America (GIA) and has also completed GIA's Graduate Diplomas in Diamonds, Colored Stones and Pearls. Under his leadership, JTV has become the leader in the sourcing and selling of color gemstones and jewelry.

This page was created on June 27, 2014.

This page was last edited on October 24, 2019.