Unique opal triplet set (Opal triplet is a slice of solid opal sandwiched between a quartz top and dark stone base, add longevity to the opal which on its own can be a brittle stone) with 7x5mm deep blue/green/red opal triplet set in silver, the pendant is 14mm long including the bail and sold on a FREE eighteen inch sterling silver chain.. The stud earrings are double set in silver and set with 6x4, oval blue/green/red triplets.