Histasi Necklace. Rose Gold Plated 925 Sterling Silver Chain Necklace with Natural Stone That Changes Color According to Body Temperature. Metal: 925 Sterling silver. Plating: Rose gold plating. Color: Rose gold. Stone: Natural Stone. Chain length: 45 cm. Product weight: 2.30 Gr (+-). Delivery: The product will be sent in a wooden gift box. Our company (IKO) is registered with the Istanbul Chamber of Jewelers.