Vintage JAMES AVERY Mexican Opal 14K Diamonds Ring Sz8 1/4 ESTATE ONE OF A KINDVintage 60s-70s JAMES AVERY Custom Mexican Opal w/ Diamonds 14K Ring Size 8 1/4 ESTATE ONE OF A KIND. This ring is from my grandmother’s estate. It is a one of a kind. So she was the original and only.