The Scarab green-dark button Pearls are old stock , from about 25-30 years ago, and are between 5-6 mm. They were purchased, by me, at the Tucson Gem Show Holidome from a reputable dealer and, to the best of my knowledge, are untreated. The hand fabricated hoops are hammered Sterling Silver with Sterling Silver earring wires. This is an earring design that I love to revisit but never are two alike so every pair are their own art pieces and original. All the metals used are either recycled or fair, humane trade verified and all components used in the jewelry will return to the earth leaving no footprint. Thank you for enjoying the art.