Seawater sapphire -10mm*5mm, ±2mm Amethyst -7mm Sterling silver ice block -2mm Sterling silver starfish [Use natural ore, no optimization treatment, please buy with peace of mind. 】 [Ore is hand-polished, there may be an error of plus or minus 0.2mm] [The works of natural ore are all made for the order] The working days are about 7~10 days. [Inventory] is a standard circumference of 16 cm, suitable for wearing a hand circumference of about 15.5 cm [Hand size] Please use a tape measure to flatten the thinnest part of the hand bowl and wrap it around the circle, which is the size of the hand. In general, we will make 0.5 cm more than the original size, which is the best bracelet size, and it looks perfect. [Natural ore itself is not so perfect, there may be mine shortages, black spots, cracks, cotton wool, and you can accept orders again!!] [Place of Origin / Manufacturing Method] Raise your heart and make it by hand. MIT.