I purchased this on this site for 3100 yen, but I wanted something with smaller stones, so I am listing it as is. Moissanite (artificial diamond) Silver 925, stamped 925 Single stone necklace Platinum coating finish. Weight: Approximately 2.7g Size: Chain: 40cm Stone: Diameter 8mm (top is not removable) This is a new gemstone with the highest level of brilliance, clarity, and excellent durability. Silver 925 is 92.5% silver and 7.5% other metals, making it the optimal material for accessories, balancing strength and beauty. Material: SV925