This Antique Opal cameo jewel works so well. The portrait is cut to the profile and enhanced with Diamond and Gold detailing. The Opal is backed by a red enameled 'Guilloche' or engine turned gold plate. A delicate surround of entwinned scrolls with Diamond accents completes the jewel.
The Brazilian Opal, shown, has a low water content and is very suitable carving as is White or Crystal Australian Opal from Cooper Pedy. The Black Opal from Lightening Ridge or Mintabe is so rare in large sizes that a cameo sized stone could cost more than $100,000.