(Our product) Lock medium-sized necklace, customizable with real gold and real diamonds, exclusively made with authentic ZP gold, competing with various gold products on the market. For bulk inquiries, please contact customer service. The necklace features a pink sapphire as the main stone. Pink sapphires are particularly rare in nature, and the color pink symbolizes the infinite power of love, embodying the essence of the Lock series. The dazzling gemstones on this K rose gold necklace are hand-set. Paired with other pieces from the Lock series, it creates a striking and outstanding look. Thick gold plating ensures longer-lasting color retention.