Available in ring sizes 8-12.5.
12 carats, diamond color is I-J, diamond clarity is I2. Total diamond weight is. Oval Black Onyx & Diamond Men's Ring Crafted in Solid 14K Yellow Gold, I/J by SuperJeweler. - Lifetime Guarantee - 60 Day Worry-Free Return - Oval Black Onyx & Diamond Men's Ring Crafted in Solid 14K Yellow Gold, I/J by SuperJeweler The oval cut black onyx measures 10 x 12mm.