Cartier Art Deco brooch, carved rock crystal with a fancy platinum mount set with diamonds, original leather box, signed c. 1925

Cartier Art Deco brooch, carved rock crystal with a fancy platinum mount set with two European and cushion cut diamonds (approx. 3 carats TW) further set with two European and cushion cut diamonds (approx. 1 carat TW) with diamond pave work filling out the surrounding floral motif, original leather box, signed and numbered, c. 1925