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 Blue Chalcedony sterling silver theader earrings $40.00 Black Onyx sterling silver stud earrings $14.00 Thulite gold filled earrings $38.00 Triple stone dangle earrings $55.00 Blue Chalcedony gold earrings $42.00