Type: Ring Metal: Alloy Grade: A Size: Approximately size 16 (Japan) Color: Blue-green Preparation for shipping: Approximately 7-10 days (may be delayed by a few days depending on circumstances). Regarding Natural Stone ● Natural jade is a polycrystalline gemstone formed by a large number of small crystals. There is a wide variety of colors, and there are individual differences in color, shape, pattern, quality, and size. There may be cracks (cracks that occur when jade is formed underground), inclusions (internal inclusions), and fine irregularities due to crystals, but please understand this as a natural charm. Regarding Color Differences ● Jade is a gemstone that tends to show differences depending on the light, so the appearance may be slightly different under different lighting conditions. Please be aware of this. ● Please understand that there may be slight color differences due to smartphone photography. Regarding Appraisal Certificates ● If you wish, you will need to have the item appraised yourself. "Central Gemological Laboratory" is a reliable appraisal institution in Japan.