14k White Gold Sapphire Oval 6x4mm Polished Sapphire and 0.17 Carat Diamond Weight Diamond Necklace - in 14k White Gold - JewelryWeb Style: TLP377168W - Gift ready jewelry box included [ Care and Handling: diamond ] - Clean with warm soapy water and a soft brush or cloth. [ Potential Enhancement Methods: sapphire ] - Usually heated to improve appearance. Occasionally irradiated. Commonly diffused along with heat application to create different colors. Yellow sapphire is always diffused. [ Care and Handling: sapphire ] - Avoid strong detergents, heat, pressure and ultrasonic cleaner or steamer. Avoid re-polishing or re-cutting of the stone. Color may fade in light or with heat. Clean with warm soapy water and a soft brush or cloth.