Product Name: Light Green Natural Jadeite Jade Ring US 10.25 - 20.1mm, Green Jade Ring for Men, Jade Jadeite Thumb Ring, Jade Archer Ring 100% Natural Jade Ring, jadeite jade (Grade A) light green and white, untreated or dyed natural jade. Material: Jade natural Jadeite Ring size and inner diameter: US 10.25 (20.1mm - 0.79") Width or Height: 13mm - 0.51" (Keep in mind that with wide rings they should use a larger size) Purity: Grade A/Not Treated/Not Tinted/Jade Natural Weight: 10.64 gr Certificate: Yes, included