Dress up your look in whimsical style with this blue lab-created sapphire and diamond butterfly necklace. Sterling silver. Features pairs of pear-shaped blue lab-created sapphires - the largest being 5. 0 x 4. 0mm each. Diamonds outline the wings and shimmer along the body. 1/4 ct. T. W. Of diamonds. 17. 0-inch cable chain necklace with lobster claw clasp.