Art Deco cluster opal ring in platinum (950). This antique cluster ring features a central cabochon-cut opal set in a close setting, surrounded by twelve old-cut diamonds. The opal shows vibrant play-of-color with shades of violet, blue, and green, accented by hints of orange. The ring’s gallery is delicately detailed with scrollwork. This Art Deco period ring dates to circa 1930 and originates from France.
Hallmarks: Dog’s head (french hallmark for platinum) and maker’s mark.
Ring Size: 51 EU or 5.75 US (Resizable).
Top dimensions: 18 x 14 mm.
Opal weight: 1.03 carats.
Estimated total diamond weight: 0.48 carats.
Condition: surface abrasions, signs of wear.
Weight: 8.18 gr
Gemology and beliefs: Opals come in various types, with noble opals being the kind that exhibits play-of-color. This captivating effect is caused by tiny, uniformly sized spheres of silica. When light hits these spheres and is refracted, it produces a dazzling display of colors on the opal’s surface. In contrast, common opals lack this play-of-color, as their spheres are disordered and of varying sizes, giving them a milky appearance. Opals have been associated with the power of invisibility in folklore, earning them the title “Patronus forum” (patron of thieves) during the late Middle Ages.
Turquoise and diamond brooch in 18 karat (750) gold and platinum. Antique brooch set with three turquoise cabochons linked by two platinum scrolls each set with 13 rose-cut diamonds (26 in total). Art Deco brooch, circa 1925, France.
Partially inscribed eagle head hallmark (French state hallmark for 18 karat gold) and goldsmith’s hallmark.
Dimensions: 11 x 46 mm
Estimated diamond weight: 0.20 carat
Diameter of the central turquoise: 7 mm
Note: the fastening system works
Condition: scratches from use
Platinum diamond cluster ring in 18 karat white gold and platinum. In the center, 9 diamonds are set in claws in an openwork radial decoration. Ring from the late Retro period, 60’s – 70’s.
French dog’s head hallmark, eagle’s head hallmark, illegible goldsmith’s hallmark.
Art Deco onyx jabot pin in platinum. Pin set with two cabochon-cut onyxes surrounded by 30 rose-cut diamonds. The jewel adopts a geometrical shape and colors typical of the Art Deco period. French Art Deco jabot pin, circa 1930.
Dog head hallmark
Total dimensions: 98 mm x 15 mm Dimensions of one design: 15 mm x 26 mm
Estimated diamond weight : 0,15 carat
Condition : fine traces of glue below onyx, scratches from use
Art Nouveau single earring in 18 karat yellow gold and platinum. Antique sleeper set with a mobile colourless corundum (imitating diamond), the latter is topped by an imitation stone in a platinum setting. Dormeuse dating from the 1910s, Art Nouveau period, mismatched jewel.
Eagle head hallmarks
Dimensions: 20 mm x 6 mm
Note: the fastening system works, the buckle goes through the front of the earlobe and closes at the back.
Condition: scratches from use, earring sold alone.
Art Deco turquoise ring in platinum and 18 karat white gold. Art Deco ring decorated with an important turquoise cut in an oval cabochon, set by eight claws. The turquoise has a strong green nuance. The ring is decorated with chiselled volutes and the basket is openwork. Antique ring from the Art Deco period, circa 1925. Owl and mascaron hallmarks
Finger size : 45 EU or 3.25 US (can be changed)
Size of the cabochon : 14 mm x 10 mm Height of the ring head : 9 mm
Condition : old trace of cutting and oxidation. Be careful the size of the ring is very small.
Art Deco Egyptomania bracelet in 18 karats white gold. This rare bangle bracelet is adorned with a large carnelian cabochon in the center, held on each side by a yellow gold palmette and enameled in black. The palmettes are set with eight rose-cut diamonds in a white gold beaded setting. The palmette motif is emblematic of the Egyptomania period of Art Deco. Bracelet of the 1930s, France.
Eagle head hallmark, LP goldsmith hallmark (maker for Cartier Paris), illegible signature.
Interior dimensions : 55 mm x 65 mm
Estimated weight of the carnelian : 18.64 carats
Estimated weight of the diamonds : 0.10 carat
Condition: scratches from use, slight deformation.