Description
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 |
