Description ��【Silver Knowledge】Sterling silver, also known as 925 sterling silver, is a metal alloy used in jewellery and decorative household objects. Traditionally, it is 92.5% silver (Ag), and 7.5% copper (Cu). The 925 hallmark indicates 92.5% silver purity. ��【Material】 This bodhi leaf necklace is made of 925 sterling silver and 18k gold plated. ��【Size】Chain length: 17.7 inch.