We are offering rough diamonds. 1. Color: white color, pure white color. 2. Size: 1.2, 1.4, 1.6, 1.8, 2.0, 2.2, 2.4, 2.6, 2.8, 3.0, 4.0mm. 3. Diamond grade:smd:690, smd:680, smd:660. 4. Certificates:iso 9001:2000. 5. Mohs hardness 10. We can provide samples for your test....