Natural Jade Size 6mm, earrings size 10mm; Material: 925 Sterling Silver; All our Jewelry are Nickel-Free, Hypoallergenic And Non-Toxic Because Made With 925 Sterling Silver (It consists of 92.5% Pure Silver and 7.5% other metals, mainly copper) Rhodium Plated Overlay 925 Sterling Silver This Baroque Pearls Stud Earrings Very Stylishly For Impressive Gift-Giving Silver butterfly backs include! Your purchase will include a 30-Day Exchange or Money-Back Guarantee, & Free US Shipping. Please email us for more details regarding this listing.