Art Deco Solid Platinum & Natural Diamond Open Brooch (1920's)

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An exceptional Art Deco platinum diamond open hexagonal brooch, dating to the 1920s–early 1930s, showcasing timeless geometric elegance and meticulous craftsmanship.

This striking circular design is set with approximately 4.30 carats total weight of old European-cut, transitional-cut, and single-cut diamonds, all bezel- and bead-set within crisp platinum channels. Fine milgrain detailing and symmetrical architecture reflect the height of Deco-era design.

Hand-assembled, the brooch weighs approximately 9.6 grams and measures about 1.5 inches in diameter. Diamonds range from VS–SI clarity and F–H color, offering beautiful sparkle and depth. Finished with a secure pin stem in 14K white gold, consistent with period construction.

A sophisticated collector piece — equally stunning worn or treasured.