Evaluation - Estimation - Conseil

Evaluation – Estimation – Consulting

With nearly twenty years of experience in the Geneva Jewellery, Diamonds and Precious Stones Testing Laboratory (GIA and GGTL laboratories) and with a diamond and coloured diamonds and gemstones trader, we are able to identify and give an accurate estimate and value to your jewellery and precious stones.

Whether it is for your insurance, inventory, estate or to prepare an inheritance, we can meet at our offices, at your home or at your bank to establish the value of your jewellery, gold coins or bars.

Sapphire necklace.

We can advise and support you in the context of investment or auctions.

We hold the most prestigious Gemological Institute of America (GIA), Hoge Raad voor Diamond d’Anvers (HRD), Diplôme d’Université de Gemmologie de Nantes (DUG).

We collaborate or have as clients studies of notary, lawyers, private banks, the Service des Objets Trouvés and the Caisse de Prêts sur Gage of the City of Geneva.

We are also expert examiner for the Geneva Department of Public Instruction for the CFCs of watchmakers, jewellers, jewellers and gemmology modules.

On mandate, we travel or accompany you abroad as part of the development or diversification of your activities (travel to mining sites, purchase of rough, trade, etc…). We make available our travels experiences in many mining countries as Centrafrica, Guinea, Sierra Léone, Madagascar, Tanzania, Namibia, Botswana, Zambia, South Africa, Russia, Colombia or Peru.

Guinea Conakry

Muzo, Boyaca, Colombia







Ilakaka, Malagasi




Tetezampaho, Madagascar