Jewelry Trends Sterling Silver Butterfly Post Earrings with Created Blue Opal Wings Metal: .925 Sterling silver; Finish: High polish with Rhodium finish to resist tarnish Adorned with lab created blue opals; Approximate stone measurements: 4.7 mm wide x 5.6 mm long Earring dimensions: 10 mm wide x 17 mm long Clasp: Butterfly Complimentary gift box included