Heavy Vintage Military Solid 10K Yellow Gold Diamond Halo Ring Size 10.5 US Ring Size ~ 10.5 Ring Face Length x Width in mm~ 19 x 24 Gram Weight ~ 23.4 Main Stone ~ Is the green center stone. I'm not sure what it is, but it is not emerald or diamond. Main Stone Length x Width in mm~ 3 x 3 Total Carat Weight of Non-Diamonds ~ 0.11ct Total Carat Weight of Diamonds ~ 0.24 Inventory Code ~ GKB-03-FF11-MS180-A555D Hallmarked ~ Yes Tested ~ Yes Notes ~ Professionally polished, cleaned, and tested. All the stones in the halo are diamonds and there is one diamond accent on each side of the band. Please contact us with any questions. We love to hear from shoppers. Thank you for your interest.