Lot 0254
Art Deco Style Platinum, Aquamarine and Diamond Pendant Necklace
Estimate: 25000-30000€
Art Deco Style Platinum, Aquamarine and Diamond Pendant Necklace
An impressive platinum pendant necklace of strongly geometric Art Deco style, centered by a large emerald-cut aquamarine within an architectural diamond-set frame, the stepped outline further enriched with diamond-set side panels and a diamond-set articulated surmount. The pendant is suspended from a platinum chain with decorative openwork links, complementing the period-inspired design.
The reverse and side views show pierced and millegrain-style detailing characteristic of high-quality geometric jewel mounts. The clasp appears marked 950, consistent with platinum fineness, while the accompanying 2008 appraisal describes the jewel as solid platinum.
Accompanied by a 2008 Dover Diamonds Appraisal, which describes the necklace as set with one genuine blue aquamarine of approximately 40.00 carats and 90 European-cut diamonds of approximately 4.50 carats total, graded H–I color, VS clarity; the appraisal also notes a gross weight of approximately 28.7 grams, pendant length of about 2¼ inches, chain length of about 20 inches, and an appraised value at that time of USD 17,500. A separate gemmological note in Estonian appears to repeat broadly similar information, including aquamarine, diamonds, approximately 40 pcs, H/I color, VS clarity, and a combined stone weight notation around 4.50 ct, but this handwritten note is not fully legible in all parts. These documents are useful supporting papers, though I cannot independently confirm the exact stone weights, natural origin, or grading without a modern gemmological report.
Material: platinum
Stones: one large emerald-cut aquamarine, numerous diamonds
Pendant length: approx. 2¼ in. / approx. 5.7 cm
Chain length: approx. 20 in. / approx. 50.8 cm
Weight: approx. 28.7 g
Auction Comparison:
For comparison, Bonhams sold an Aquamarine and Diamond Pendant/Necklace, circa 1940 in the Knightsbridge Jewels sale on 26 November 2025 as Lot 361, for £20,480 including premium. Bonhams described that example as set with a step-cut aquamarine weighing approximately 27.70 carats and diamonds totaling approximately 3.00 carats. By contrast, the present necklace is accompanied by an appraisal describing its aquamarine at approximately 40.00 carats, indicating a substantially larger center stone than the Bonhams example.
Starting price: 20000€
Estimate: 25000-30000€
Hammer Price: €





































