I purchased from the platform a jewel with the characteristics of a VS1 diamond, color J, size 55, and I received SI2, color M, size 52. The certificate accompanying the jewel was issued by a laboratory not accredited by Catawiki. When I filed a complaint, I was asked for a certificate that was impossible to obtain from my country, and to my remark that Catawiki should request these certificates from sellers and not from the client, Catawiki said that it accepts any type of certificate from this seller because this is an important seller in the platform. But catawiki should not forget that the most important (the one who owns the money) is the buyer and catawiki should first of all protect him Big disappointment!!!