Retro Square Opal Earrings are available in several crushed opal inlay options. Lab-made crushed opal consists of Silica and Polymer rather than hydrated silica (natural opal). Gold plated bezels and posts with gold plated butterfly clutch backings. Vintage stock base supplies, these posts have a nice weight. Vintage dead stock supplies are sustainable and have been recycled back into the supply chain. Main pic shows white opal. Earrings measure 8mm in width and 5mm in depth.  So pretty and unique!