Repairings and restorations of watches and jewellery; gemmological expert opinions and expertises; gemmological training of advanced tutorial classes; quality controls; appraisals of precious stones, jewellery and watches; designs of jewellery and watches; exploration of mines of precious stones; professional consulting in the field of prospecting precious stones.
Repairings and restorations of watches and jewellery; gemmological expert opinions and expertises; gemmological training of advanced tutorial classes; quality controls; appraisals of precious stones, jewellery and watches; designs of jewellery and watches; exploration of mines of precious stones; professional consulting in the field of prospecting precious stones.
