Signed Diamond and Gemstone Jewellery

Mystery Set Ruby and Diamond Ring

Weldons — Fri, 13 Feb 2026 14:47:04 +0000

Incredible ruby and diamond ring, made by Schilling of Munich, circa 1930. With a ruby and diamond cluster at the centre, mounted atop a wave of mystery set rubies. This amazingly rare technique allows the stones to be set flush to each other, with no metal visible. A simply wonderful piece of jewellery. Finger size [...]

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Boucheron Diamond Ring

Weldons — Fri, 13 Feb 2026 13:41:12 +0000

Exceptional diamond ring by Boucheron Paris. Set with a 3.9 carat Old European cut diamond, E colour and SI1 clarity, and diamond set shoulders. Signed by Boucheron, French hallmarks. Finger size I 1/2, we can adjust to fit most fingers.

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Oscar Heyman Chequerboard Ring

Weldons — Thu, 15 Jan 2026 15:50:44 +0000

Rare 1930s gold ring by Oscar Heyman, set with chequerboard pattern emeralds and diamonds. Signed and numbered inside the shank. Finger size i, this ring has to fit.

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Gold Bracelet, Vacheron Constantin

Weldons — Fri, 09 Jan 2026 17:06:14 +0000

Superb gold night and day bracelet by Vacheron Constantin. 80 grams of 18kt gold, one side with alternating diamond and plain links, the other side plain. The flat clasp allows either side to be worn facing out. 7 1/2 inches in length.

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Opal and Diamond Ring

Weldons — Wed, 07 Jan 2026 11:53:01 +0000

Antique opal and diamond cluster ring by Bailey Banks and Biddle. Set on platinum with 2 carat harlequin opal in a halo of brilliant cut diamonds. American, circa 1910. Finger size M 1/2, we can adjust to fit most fingers.

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Mellerio Diamond Ring

Weldons — Sun, 21 Dec 2025 15:43:13 +0000

Beautiful diamond ring by Mellerio dits Meller of Paris, circa 1930. Set with a one carat centre stone surrounded by brilliant and marquise cut diamonds. Signed under the gallery. In its original box, embossed with the initials CR. Finger size L, we can adjust to fit most fingers. Mellerio dits Meller is a French jewellery [...]

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Vintage Tank Bracelet, by Jahan

Weldons — Tue, 08 Apr 2025 14:41:38 +0000

Superb vintage diamond bracelet, by Jahan of Geneva, a family-run company of master jewellers and watch-makers. With over 20 carats of diamonds, set on platinum.

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Tiffany Engagement Ring

Weldons — Thu, 20 Mar 2025 17:28:36 +0000

Diamond engagement ring by Tiffany and Co. Claw set with a 0.37ct diamond, I colour and VVS clarity. Finger size L, we can adjust to fit any finger.

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Tiffany and Co Engagement Ring

Weldons — Wed, 19 Mar 2025 15:50:24 +0000

Platinum engagement ring by Tiffany and Co, set with a 0.36ct brilliant cut diamond, I colour and VVS clarity. Finger size K, we can adjust to fit any finger.

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Tiffany and Co Engagement Ring

Weldons — Tue, 11 Mar 2025 13:58:53 +0000

Superb diamond engagement ring by Tiffany’s. Set on platinum with an emerald cut diamond and pavé shoulders. GIA certed, 1.52ct H SI1. Finger size L 1/2, we can adjust to fit any finger.

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