Irisa by Martin Binder 18-Karat Yellow Gold Alexandrite & Diamond Necklace Center: One Oval Cut Alexandrite Gemstone (2.60 ct) Certified Accents: Two Baguette Cut Diamonds (0.17 ctw) Accents: Twelve Round Cut Diamonds (0.33 ctw) Accents: One Pear Cut Diamond (0.15 ctw) Chain Accents: Six Marquise Cut Diamonds (0.40 ctw) 16 to 18 Inch Chain with Lobster Clasp