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 Peridot sterling silver stud earrings $16.00 Abalone and green onyx earrings $50.00 Chalcedony with component gold earrings $45.00 Shell pearl gold hoops $25.00 Turquoise western sterling silver studs $35.00