Stone: Swiss Blue Topaz Cushion Cut Stone Size: 8mm (longest) Material: S925 (stamped, see photo) Size: Size 13 You can view the list of accessories for sale below: #mizunoaccessories This is a Swiss Blue Topaz ring. It uses a rare cut of stone with a square-shaped cut on the surface. Blue topaz is broadly classified into three types depending on the color intensity: Sky Blue Topaz, Swiss Blue Topaz, and London Blue Topaz. Natural blue topaz exists, but it is rare and the color is even lighter than aquamarine, so commercially available blue topaz is generally white topaz that has been irradiated to turn blue. The color intensity varies depending on the irradiation time. Sky Blue Topaz requires 2 weeks, while Swiss Blue Topaz and London Blue Topaz require 6-9 months of irradiation. Therefore, Swiss Blue and London Blue are less common and more expensive than Sky Blue. Swiss Blue Topaz is characterized by its vivid, bright blue color. It is even less common than the popular London Blue Topaz. The metal is allergy-friendly silver 925. ※ Regarding accessories We are selling at the lowest possible price. Discounts are only available for multiple purchases. We will give you a discount of -200 yen for 2 items purchased and -400 yen for 3 items purchased. Also, repeat customers will receive a discount of -100 yen even for a single item purchase. In any case, please comment before purchasing. ⭐︎ We list kimono items around 8:30 pm every day, and occasionally accessories. If you like, please follow us (turn on notifications for listings to receive notifications). Material: Silver Scratches/Discoloration: None Ring Size: Size 13 Accessories: Box