The earth still gives exceptional stones. Diamonds of 30 carats, emeralds of 91 carats, opals of 115 carats… And other wonders that craftsmen transform into exceptional jewels. Some of these pieces are presented discreetly in the salons of Place Vendôme, others will be revealed at the XXVIth Biennale des Antiquaires in mid-September with a scenography designed by Karl …