These exquisite .925 Sterling Silver earrings feature high quality lab created blue opals and clear and purple Cubic Zirconia stones in a vintage inspired design. There are 24 stones in all, 12 in each earring. ---Most Opals used in Jewelry are grown in a lab or, "Lab Created" like the Opals used in our Jewelry. Natural Opals are a soft stone and prone to cracking. Lab Created Opals are strong, more vibrant and have "Fire" and consistency to their coloration. Additional Details ------------------------------ Product description: These exquisite .925 Sterling Silver earrings feature high quality lab created blue opals and clear and purple Cubic Zirconia stones in a vintage inspired design. There are 24 stones in all, 12 in each earring. ---Most Opals used in Jewelry are grown in a lab or, "Lab Created" like the Opals used in our Jewelry. Natural Opals are a soft stone and prone to cracking. Lab Created Opals are strong, more vibrant and have "Fire" and consistency to their coloration.