1. Applied Diamond Inc
2. Asahi Diamond Industrial Co Ltd
3. Brilliant Earth Llc
4. Element Six
5. Engis Corporation
6. Henan Huanghe Whirlwind Co Ltd
7. Henan Liliang Diamond Co Ltd
8. Heyaru Engineering Nv
9. Iljin Diamond Co Ltd
10. Labgems
11. New Diamond Technology Llc
12. Soham Industrial Diamonds
13. Sumitomo Electric Industries Ltd
14. Wd Lab Grown Diamonds
15. Zhengzhou Sino-Crystal Diamond Co Ltd