Evaluation – Estimation – Consulting

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

We collaborate or have as clients auction houses and studies of bailiffs, notaries, lawyers, private banks, foundations, the Service des Objets Trouvés, the Caisse de Prêts sur Gage and the Estate Department of the City of Geneva.

With more than twenty years of experience in the Geneva Jewelry, 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 jewelry and precious stones.

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

We hold the most prestigious diplomas as the Gemological Institute of America (GIA), the Antwerpen Hoge Raad voor Diamond (HRD) or the University Degree in Gemology from Nantes, France (DUG).

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 Central African Republic, Guinea, Sierra Leone, Madagascar, Tanzania, Namibia, Botswana, Zambia, South Africa, Libya, Russia, Colombia or Peru…

Guinea Conakry

Muzo, Boyaca, Colombia






Ilakaka, Madagascar

Tetezampaho, Madagascar