Description
- Brand Name:Cheestar Gems
- Certificate Type:GDTC
- Color:Green
- Main Stone:Emerald
- Fine or Fashion:Fine
- Certificate Number:No certificate
- Material:hydrothermal emerald
- Type:Lab Grown Emerald
- Stone shape:Octagon shape
- Stone size:6*8mm
- Stone color:Columbia Green color
- Cutting:Emerald cut
- Weight:about 1.35 carat
- Refractive Index:1.570-1.577
- Crystal System:Hexagonal
- Specific Gravity:2.70
- Chemical Composition:Be3AI2Si6O18
- Hardness:7.5-8.0
- Melting Point:1410°C
- Birefringence:0.007
- Application:for jewelry making
