Made in Japan. K18 product. This is a pendant top featuring a rare, natural Tanzanian-origin kornerupine in an oval cut. Tanzanian kornerupine is characterized by its exceptional transparency and deep color, making it a highly valuable gemstone. Furthermore, kornerupine is found in limited locations and is rarely mined, making it an extremely rare gem on the market. Its hardness and durability allow you to enjoy its beauty for a long time. This is a recommended item as a reward for yourself or as a gift for someone special. Stamped with K18. Size: Approximately 3 x 4mm Material: K18 Yellow Gold Stone: 1 Tanzanian Kornerupine, 0.10ct The bale has an inner diameter of approximately 3mm and is oval-shaped.