https://live.staticflickr.com/65535/48983366698_48ece91ec7_z.jpg ◤Design brand Japan Yamazaki Industry has been established since 1918 Committed to the production of various types of metal utensils, parts and accessories, etc. The highest quality in the world In 1991, at the Nobel Prize 90th Anniversary Dinner, the most advanced tableware was provided. The world recognizes the products of Yamazaki Metal as the best material to grind And develop new craft products with the technology of the staff. https://live.staticflickr.com/65535/48989098823_4bc04fa67a_z.jpg Origin Japan ◤ material 925 silver ◤ size (manual measurement of the largest size, there will be ± 2mm error value) Ring circumference / 1.7 cm ※More than ten years old pieces are new products that have not been used. Metal products have been blackened for a long time, so please do not place orders. ※The chemical nature of silver is more active, so it will form black silver sulfide with carbon dioxide in the air. When the surface of the silver is black, it can be cleaned with silver cloth and soda powder.