Laura: 1.7ct 10mm Halo Earring Jacket & 6mm Black Russian IOF Basket Stud Earring Set Silver, 0790 The Laura features our brand new 10mm Russian Ice CZ earring jacket paired up with a matching set of our 6mm Black Russian Ice CZ studs. Oh so gorgeous and oh so elegant! The included stud earrings feature a pair of our contemporary 6mm, 0.75 carats each, Black Russian Ice on Fire CZ gemstones. The Laura jacket works great with a variety of studs and gemstones. We've included photos of just a few samples. Metal components are solid 925 Sterling Silver. Overall width is 10mm so it's just under 1/2 inch.