Jelly Opal and Diamond Ring. 18 karat yellow gold cluster ring consisting of 1 oval shaped cabochon jelly opal weighing 6.32 carats, the center stone is set with 2.03 carats of round brilliant cut and pear shape diamond diamonds. 1stdibs.com.
Gold, silver, enamel, rock crystal, diamond, ruby and emerald oval pendant, hanging from rose diamond love trophy of Cupid's wedding torch and quiver of arrows held by a suspension loop. The centre of the rock crystal is encrusted with two rose diamond turtle doves in flight with an emerald and ruby branch of myrtle leaves and berries between them...
Tiffany Opal Necklace with Demantoid Garnet Accents, Janet Annenberg Hooker Hall of Geology, Gems, and Minerals This necklace by Louis Comfort Tiffany sports a black opal from Australia’s Lightning Ridge, along with demantoid garnet accents from Russia. http://geogallery.si.edu
An early 20th century opal and diamond pendant, circa 1910 Set to the centre with a cabochon opal within an openwork surround of millegrain set pear-shaped diamonds, diamonds approximately 3.10 carats total, length 3.9cm.