René BOIVIN 1980s.

René BOIVIN
1980s.
Ring in 18K yellow gold (750‰) adorned with an
oval facetted sapphire (approx. 4 carats).
Maker’s mark.
EU ring size: 51
Gross weight: 13 g
Preliminary examination by the Laboratoire GEM
Paris, n° 20211976002 indicating: Origin: Sri Lanka -
Unheated