I saw these on Pinterest (of course), and I had to make them. Small crystal and squaredelle is 6mm and the larger crystal/squaredelle is 8mm, 20 gauge gold colored craft wire, gold colored lever back earwires. I'm waiting on another shipment of square Swarovski crystals in more colors. I'm also going to do them in 4mm/6mm round crystals and roundelles. I think these earrings are breathtaking.