SHOP › Lab grown blue Opal sterling silver stud earrings Image 1 of 3 Image 2 of 3 Image 3 of 3 Lab grown blue Opal sterling silver stud earrings $14.00 Blue Opal (man made) round sterling silver stud earrings. Studs measure 4.5mm Quantity: Add To Cart Added! Blue Opal (man made) round sterling silver stud earrings. Studs measure 4.5mm Reviews Reviewer Name Review Date Star Rating Description Posted on Etsy Product Show More You Might Also Like Ruby dangle earrings $35.00 Labradorite threader earrings $44.00 Moonstone gold filled earrings $35.00 Peridot sterling silver stud earrings $16.00 Red Coral sterling silver stud earrings $14.00