About

GGS is a service provider, dedicated to authenticating and valuing jewelry, gemstones and luxury watches. Depending on the product we are examining we use different authentication processes, most oftenly for stuff like jewelry and gemstones we have our inhouse gemologist examine them.
When you have an item examined by GGS, we always include a certificate with all information that we have discovered. Along with that certificate you get a report number, so that you are always able to find it online as well and make sure the certificate you have is authentic. Along with that we use authentication badges or stamps, which are used to add an extra layer of authenticity, to make sure no certificate is replicated.