Item Size (Manual Measurementr, please allow ±0.5mm size difference): Inner diameter 62mm (Inner perimeter is about 7.67 inches) Width 9-10mm Thickness 9-10mm Weight 30-50 g Jade Name: 100% Natural Chinese Guizhou Jade / Calcite Jade (NO Certificate) Color As the pictures showed, for different screen, may be slightly color difference Weight About 30-50 g Jade Name Chinese Guizhou / Calcite Jade (NO Certificate card) Chinese Name 中国贵州翠玉 / 方解石玉 (不带证书) Item Size Inner diameter: 62mm (Inner perimeter is about 7.67 inches) Width: 10mm Thickness: 9-10mm Manual Measurement by vernier caliper, please allow ±0.5mm size difference Item Condition All new, the jade is natural, no treated or dyed, this is multiple listing, there may be flaws on some pieces, and every piece may be some color and size different, please be sure you have known this before you placed the order, thank you. For Jade items, grade A only meant the item is 100% natural, no treated or dyed, it don't have other meaning.