Marchak diamond cocktail ring, French, circa 1950.

Diamond cocktail ring. Set to centre with a round old cut diamond in an open back grain setting an approximate weight of 0.95 carats, further set with twenty two round old cut diamon...

Cartier diamond dress ring. Set with eight round brilliant cut diamonds in open back claw settings with an approximate combined weight of 1.60 carats, to an elegant curving marquise ...

Diamond cocktail ring. Set with one round old cut diamond in an open back claw setting with an approximate weight of 1.05 carats, further set with one round old cut diamond in an open back claw setting with a weight of 1.00 carats, further adorned with two round star top diamonds in open back grain settings with a combined weight of 0.20 carats. The total approximate diamond weight is 2.25 carats, to an openwork geometric design, featuring curving claws, polished edges and fancy open backholing, flanked by broad raised shoulders which taper through to a solid flat ribbed shank...

Monture Cartier diamond cocktail ring. Centrally set with a round old cut diamond in an open back claw setting with an approximate weight of 1.30 carats, flanked by sixteen round eight-cut diamonds in open back grain settings with a combined weight of 0.24 carats, and further set with eight round transitional cut diamonds in open back grain settings with a combined weight of 0.26 carats. The total approximate diamond weight is 1.80 carats, to an impressive architectural design, featuring polished edges, a raised gallery with ridged detail throughout, and fancy open backholing, leading to broad integrated shoulders which flow through to a ridged D-shaped shank. Marked 18 carat yellow gold and platinum, French import marks, indistinct makers mark, signed Monture Cartier', accompanied by original Cartier box, French, 1950, accompanied by IAJA report #XP2251-040325. To signify that the customer's stones were used, every made-to-order piece was given the signature 'Monture Cartier' meaning Cartier mounting...

A diamond solitaire cocktail ring in platinum, ca. 1970s. The ring is centred with a round brilliant cut diamond weighing approximat...

A stunning, fine and impressive vintage 3.08 carat diamond and platinum cocktail ring; part of our diverse vintage jewelry and estate jewelry collections. This stunning vintage diamond ring has been crafted in platinum. The pierced decorated, swirl style setting is ornamented with a feature 0.80Ct transitional modern brilliant round cut diamond, claw set in relief to the center of the design. The principal diamond is encompassed with a two-stranded overlapping swirl design, ornamented with fifty-six claw set baguette cut diamonds, totalling 2.28Ct. The offset ring...

Ring in platinum, dog's head hallmark. Oval and domed, openwork, this incredible ring is claw-set with 2 antique and intermediate brilliant- cut diamonds on an entourage of shuttle- cut diamonds. The ring is made of 3 gold threads that meet at the base. Special order handmade by Maison Cartier. Ring signed and presented in its original case from Maison Cartier. Total diamond weight : approximately 7 carats. Height : 21.6mm, Width : 21.1mm, Thickness : 9.2mm, Ring Width at Base : 3.6mm. Total weight of the jewel : approximately 9.7 g. Authentic antique jewel - French work from the 1950s. Our opinion : Splendid and luminous, this retro diamond ring was specially ordered and made to measure from Cartier - Place Vendôme...

Ring in platinum, dog head hallmark. Important openwork dome ring, it is set with claws on its top with 2 modern brilliant- cut diamonds. The top of the dome of the setting is openwo...