These earrings contain natural Australian Opal Gemstones with measurements of 8x10mm. The side stones are high quality cubic zirconia's. These earrings are 925 Sterling Silver and Platinum Plated, also available in Gold or Rose Gold Plating. This item includes a gift box and a certificate of authenticity with purchase. This item is made to order, please allow up to 10-15 days for processing and delivery.