Blue Topaz (1-7/8 Ct. T.w.) & Lab-Grown White Sapphire (1/5 Ct. T.w.) Double Circle 18" Pendant Necklace in Sterling Silver Make elegance your goal with this beautiful circle pendant necklace, set with an inner ring of pear-cut blue topaz, and an outer ring of sparkling lab-grown white sapphire. Product Features Blue Topaz: 1-7/8 ct. t.w. Lab-grown White Sapphire: 1/5 ct. t.w. Set in sterling silver Approx. length: 18"; approx. drop: 1-1/5" Spring ring clasp closure; cable link chain Lab-grown gemstones are grown in a laboratory, but are chemically, physically and optically identical to natural gems. Lab-grown stones rely on a steady, controlled process of applying minerals, heat and pressure, and they usually have few inclusions This stunning necklace features a circle pendant adorned with sparkling blue gemstones set in silver. Perfect for adding a touch of elegance to any outfit.