FRENCH 1930 Paris Art Deco Pyramid Rock Quartz Clip Platinum 18Kt Gold With Onyx

A French Art deco clip brooch in the manner of Rene Boivin.

This is a magnificent piece of jewelry from the French art deco period, created in Paris in the manner and style of Rene Boivin, between the 1928-1930, This geometric pendant-clip is very versatile and has been crafted with a pyramid shape, with parts in solid platinum and 18 karats white gold. It is embellished with a square cut carved from translucent natural rock quartz and is fitted at the reverse with a hinged tension element for fastening clip. This piece of jewelry can be wear as a dress clip or a pendant in a chain, a wire or a necklace

Gemstones: Mounted in the center over the rock quartz, with one sugarloaf cabochon cut (20 x 20 x 10 mm) of a natural black onyx.

Weight: 23.95 Grams, (15.32 Dwt).

Measurements: 29 mm by 29  mm by 19 mm (1.14 x 1.14 x 0.75 Inches).

Hallmarks: Stamped with French national control marks; the eagle head and the dog head for the assay of the 18kt gold and the platinum respectively and the maker's mark RB inside a lozange cartouche.

Provenance: A private collection in New York, USA. Acquired in 2022.

Literature: François Cailles, Rene Boivin Jeweller, quarter Book 1994, Pp-109,137 and 172 for a similar Pyramide pieces illustrated.

Collateral: This piece is accompanied by a presentation jewelry box.

Condition: The overall condition of this piece is excellent. Beside the little normal wear, there is no damage to the platinum. The gemstones are secured in the settings. This piece has been carefully inspected to guarantee the condition and authenticity.

INVENTORY REF: P111522SSNM/.6910