Minty Fresh Agate & Prehnite Earrings. These minty fresh earrings are ideal for the warm summer months. Earrings feature 3.6mm cultured freshwater pearls, 6.3mm prehnite and 12mm agate beads on 14/20 gold filled wires.Full hanging length is approximately 38mm. 14/20 Gold Filled. Frees shipping. Estimated delivery time is 4-7 days.