Original Art Deco Diamond Onyx Platinum Gold Cross Pendant Necklace

This is a beautiful original art deco cross C.1930 set with black onyx diamonds in platinum with an 18K gold back. The chain neccklace has floral designs with 14 rose cut diamonds. The pendant has a large black onyx section with 30 old mine and rose cut diamonds. The diamonds average I color VS-2 clarity total weight approximately 1.10 carats. Pendant portion measures 67mm high by 32mm wide, Chain measures 15.5", Weight 10.1 grams