New vintage Opal pendant charm

new vintage Opal pendant charm Curved Diamond shaped frame with a twisted rope wrapping around it in a “figure 8”. Round spherical Opals! Mostly milky blue-white and pink-blue with SPARKS of green, pinky-red! Beautiful goldtone setting-mount and 3 prongs per Opal. Overall: C. 11x17 mm, 4 mm high, not including bail Bail: 4x5 mm Opals: c. 2.5 mm round New vintage c. 1970s. Opal. There are no hallmarks. I included lots of pictures. Maybe you can spot it because I can’t. The others in this collection are Sterling silver with gold plating. Hallmarks on the bail: “SS” and “??” (L within an L or Lattice shape?). Probably from same company as Karatclad opals. This piece also has an extra gold ring for some reason. Group photos show other pieces in the collection.