RENÉ BOIVIN-1990S CULTURED PEARL CROSS RING The ring is set with two cultured pearls, one white, the other grey. Sinuous setting in 18K white gold. French work signed René BOIVIN. Gross weight: 20.23 g Diameter of the pearls: 12.50 to 12.60 mm approx. Finger size: 46. René BOIVIN case. The authenticity of this jewel has been confirmed by Françoise CAILLES and Jean-Norbert SALIT. A white and gray cultured pearls and 18K white gold ring by René Boivin, circa 1990. Signed René Boivin. French assay mark. Gross weight : 20,23 gr. Pearls diameter : 12,50 à 12,60 mm approx. Size : 46. René Boivin box. The authenticity of this jewel has been confirmed by Mrs. Françoise CAILLES and Mr. Jean-Norbert SALIT.