Set a stylish tone with this oh-so-sparkly white lab-created sapphire twist necklace. Sterling silver and 10k yellow gold a 7mm round-cut white lab-created sapphire—topped by a dainty white lab-created sapphire—is the shimmering centerpiece polished ribbons and twists of more white lab-created sapphires create the pendant 16- to 18-inch adjustable cable chain; lobster clasp