Art Deco Platinum and Diamond Geometric Plaque Brooch, 1.50 Carats, circa 1920’s

Art Deco Platinum and Diamond Geometric Plaque Brooch, 1.50 Carats, circa 1920’s

Description

A striking and beautifully composed Art Deco diamond brooch, crafted in platinum and dating to circa 1930, in its original presentation box. This elegant geometric plaque design exemplifies the refined symmetry and architectural precision that define the finest period jewellery.

The brooch is finely set throughout with approximately 1.50 carats of bright white diamonds, including a central round brilliant-cut stone framed within a meticulously pavé-set ground. Crisp openwork panels, delicate milgrain detailing, and balanced linear elements create exceptional light return and visual structure from every angle.

Substantial yet refined in scale at 4.8cm, the piece wears superbly on a lapel, dress, or scarf, offering both presence and sophistication. The craftsmanship is of high quality, with precise stone setting and a beautifully engineered platinum mount.

A timeless and highly wearable example of original Art Deco design — elegant, architectural, and unmistakably period.

Details
• Period: Circa 1925–1935
• Origin: European
• Metal: Platinum
• Total diamond weight: Approximately 1.50 carats (Est. VS-VVS, H-I-J-K Colour)
• Diamond cut: Mixed old cuts and early brilliant cuts
• Length: 4.8 cm
• Weight: 9.17 grams
• Fastening: Original pin and safety clasp

Condition

Very good antique condition and in its original leather and velvet presentation box. Light wear consistent with age. Stones secure, settings crisp, and clasp functioning well.

For insurance replacement purposes, we recommend this Art Deco platinum and diamond brooch be valued at £8,500 reflecting the cost of sourcing a comparable original period example of similar design, diamond content, craftsmanship, and condition in the current international retail market.

Condition & Authenticity

Each piece has been carefully inspected and is presented in very good condition, with wear consistent with its age and use. Materials and stones are assessed using standard industry methods and professional experience. Additional images or video are available on request.

Pricing & taxes

Prices are shown as listed. VAT is not charged on purchases.

International orders
Buyers outside the UK are responsible for any import duties, taxes, or customs charges required by their country
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