Art Deco Two Strand Pearl Cabochon Emerald Diamond Platinum Clasp Necklace. This is a beautiful original art deco cultured pearl necklace with a platinum diamond clasp. The clasp is set with a natural cabochon emerald with amazing green color and clarity aproximately .85 carats. The larges pearl measures 10mm in diameter they average 7mm. The pearls have great color and luster they are in good condition. The clasp has 28 diamonds I color SI-1 clarity total weight .65 carats. The necklace measures 19" long, Weight 70.0 grams.