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4 mm Round Precision-cut AAA Ceylon Color Blue Sapphire, Item #ACC222198

$520.00

Genuine Sapphire

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4 mm Round Precision-cut AAA Ceylon Color Blue Sapphire.

Specifications

Weight: 0.28 CT
Selling Unit of Measure: ea
Gemstone Quality: AAA
Gemstone Quality Description: Medium to dark blue; little or no color zoning; eye clean; excellent brilliance; excellent cut; excellent polish
Stone Enhancement Code: H
Stone Hardness: 9
Gem Species: Corundum
Stone RI: 1.762-1.77
Stone Specific Gravity: 4.00
Stone Optic Character: DR
Stone Phenomena: Asterism, Color Change, Chatoyancy (very rare)
Stone Ultrasonic Reaction: Usually safe
Steamer Reaction: Usually safe
Heat Reaction: Poor-may sometimes improve color, but may cause loss of color
Chemical Reaction: Solutions containing Borax
Major Sources: Australia, Cambodia, East Africa, India, Kashmir, Myanmar, Sri Lanka, Thailand, United States