Description
4.5 / 5 mm Round Diamond-cut AA Umba Sapphire
Specifications
| Weight: | 0.561 CT/ 0.445 CT |
| Color: | Orange, Pink |
| Selling Unit of Measure: | ea |
| Gemstone Quality: | AA |
| Stone Enhancement Code: | N |
| Month for Birthstone: | September |
| Stone Hardness: | 9 |
| Gem Species: | Corundum |
| Stone Phenomena: | Asterism, Color Change, Chatoyancy (very rare) |
| mm Size: | 5 mm |
| Chemical Reaction: | Solutions containing Borax |
| Stone Specific Gravity: | 4.00 |
| Stone RI: | 1.762-1.77 |
| Heat Reaction: | Poor-may sometimes improve color, but may cause loss of color |
| Major Sources: | Australia, Cambodia, East Africa, India, Kashmir, Madagascar, Myanmar, Sri Lanka, Tanzania, Thailand, United States |
| Stone Optic Character: | DR |
| Steamer Reaction: | Usually safe |
| Stone Ultrasonic Reaction: | Usually safe |
