Edison pearls are a species of large freshwater pearls with the qualities of a Tahitian and South Sea pearl, at a more affordable price. they have a nacre thickness similar to the South Sea pearl above 2mm, which accounts for the beautiful pearl essence and appearance. Margo Morrison earrings Approx. 1.25"L 18-karat gold-plated sterling silver Naturally-hued freshwater pearls White sapphire gemstones For pierced ears Wipe clean Made in USA from imported materials