This item was given to me by my grandmother, so the brand is unknown, but it was purchased at a jewelry store at the time. Please understand that this is a vintage item. Simple design, K18 stone necklace, weight 3.5g - Engraving: K18 - Design: Stone necklace - Weight: 3.5g Thank you for viewing. K18 → 19,000〜20,000/g The price is determined based on the recent market price. Please purchase only if you understand that this is a vintage item. *The price of the stone is difficult to estimate, so it is calculated as half the total weight and priced as K18.