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 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 Round Amethyst gold studs $35.00 Abalone and green onyx earrings $50.00 Labradorite statement gold earring $42.00 Sold Out Garnet gold filled studs $45.00 Sold Out Smoky Quartz stud earrings $40.00