These remind me of Venetian glass. Swirls of browns, beiges & creams cascade & twirl through clear lucite. They were drawn into canes & then sliced ala' Italian Lampwork Glass style. Each measures about 8mm in diameter: the perfect tiny size, classic & classy. See the last couple pics for the necklace that is another option - (not included). Earrings are made with vintage lucite parts that were made in Rhode Island in the 1960's - early 80's by Best Plastics. I hand-set them with surgical steel earring posts and they have sturdy surgical steel/acrylic backings on them as well. Light-weight & fun to wear. Posts are electo-set into the lucite parts. Alot of previous buyers have loved the fact that these earrings are not simply glued to a post. I electro-set them all by hand using a machine my husband built.