Katie Holmes Inspired Synthetic Sapphire Necklace As blue as the evening sky, and surrounded by sparkle, this Simulated Sapphire pendant is sure to add a touch of elegance to your evening attire. A single round cut 1.25 ct Simulated Sapphire is prong set high on a circle of tiny pave imitation diamond CZs. The pendant weighs 2 grams without a chain, and hangs 19mm including the bale. .925 sterling silver jewelry