RENE BOIVIN. A Diamond "Crête" Ring.

Lovely Art Deco Mabe Pearl, Enamel and Diamond Ring, Attributed to Rene Boivin from the 1920's. Set in silver with a large domed mabe pearl and stepped design on diamonds running dow...

René Boivin marquise diamond coronet cluster ring. Set to centre with a marquise shape old cut diamond in an open back grain setting, with an approximate weight of 1.00 carat, encircled by twenty two round eight cut diamonds in open back grain settings, with a combined weight of 0.22 carats, flanked further by three round eight cut diamonds in open back grain settings, six in total, with a combined weight of 0.06 carats. The total approximate diamond weight is 1.28 carats, to an impressive coronet cluster design featuring polished borders, an intricately pierced gallery and fancy open backholing, flanked by slightly raised shoulders that flow through to a concave shank. Tested platinum, makers mark...

Platinum ring with a large central old cut diamond of 1.20 carats, surrounded by baguette and round cut diamonds for a total of 1.60 carats / Made in Italy 1940s-1950s Ring size US 4.5

Sapphire & Diamond Cocktail Ring, A platinum and white gold ring set with a central oval sapphire with a halo of round diamonds and 21 rows of baguette diamonds extending outward S...