ART DECO DIAMOND, SAPPHIRE AND ONYX PENDENT NECKLACE, BY CARTIER

ART DECO DIAMOND, SAPPHIRE AND ONYX PENDENT NECKLACE, BY CARTIER
Round diamonds, calibré-cut and cabochon sapphires, calibré-cut onyx, platinum (indistinct mark), circa 1920, signed Cartier N.Y, numbered, red Cartier case

Cartier, 2011: Certificate of Authenticity

Size/Dimensions: pendant 6.7 cm; neck chain approximately 54.8 cm
Gross weight: 25.8 grams