Hello. Did you know that a diamond certificate is something like a jewelry passport? This is a scientific document from an independent gemological center as a sign of the authenticity of the mineral and confirmation of the veracity of its characteristics. The certification process is a mineral diagnosis and characterization according to generally accepted standards and quality standards. I think only certified jewelry can be trusted, so my choice is gsi certified diamonds
'cause I've got the fastest delivery time on and off-season. All biggest UScompanies like Zales, Kays. Fred Meyers, Helzberg use gsi for their certification.