The point is that each bare diamond of forevermark must be equipped with a certificate from GIA Gemological Institute of America. Why is there only one certificate from forevermark? GIA certificates are usually attached to permanent mark certificates. You can have a look.
The reference price of loose diamonds is around 14500, the price of ring holder is within 18K excluding small diamonds, and the price of platinum Pt900 excluding small diamonds is within 2000.