Other gemstones

We are pleased to evaluate a wide range of gem materials for testing. Our services cover materials such as Jadeite, Garnet, Chrysoberyl, Topaz, Coral, Tanzanite, and Peridot. Please note that we no longer offer testing for amber or turquoise.

Whilst we cannot guarantee an opinion on origin for this category, we can offer a full report with treatment disclosure or, if the treatment is not easily determinable, an identification report at a reduced cost.

GCS gemstone reports are issued for individual loose gemstones, gemstone pairs, gemstone sets, as well as for mounted jewellery (rings, ear clips and necklaces etc.) providing the mounting allows for adequate testing.