"Australian Boulder Opal doublet charms set in 18K Gold with 14K Gold bail and Argentium Sterling Silver backing hang from a 14K Gold Chain. Each Opal Charm and chain sold separately. This grouping of my popular Opal charms is top not quality! These beautiful Opals have great play of color and amazing flash with shades of neon blue, green, pink, purple, lavender, red... You can wear one or a few together. You can use your own chain or purchase the 14K Gold rope chain pictured. Chain is 16\" long Blue Drop Jewelry With Cabochon, Blue Cabochon Drop Jewelry, Blue Drop Cabochon Jewelry, Oval Blue High Luster Jewelry, Hallmarked Blue Opal Jewelry, October Birthdays, Australian Opal Pendant, Gold Rope Chains, Australian Boulder Opal