Material: Glass Size - 6.6 mm x 8 mm & 6.6 mm x 7.4 mm Cut - Rectangle Princess Brilliant Color - Red / Purple / Maroon & Blue / Green Metal: 10k Yellow Gold Weight: 2 Grams Stamps: 10k Closure: Stick Posts & Butterfly Backs Measurements: 8.2 x 6.6 mm Each piece is thoroughly examined & refinished as needed by our professional jewelers, graded by our in-house GIA (Gemological Institute of America) Graduate Gemologist, & inspected for quality before being carefully packaged & promptly shipped. [SKU: C0917] KPR Bi-Colored Molded Glass Stud Earrings 10K Yellow Gold Color Change