Genuine Natural Light Blue Aquamarine (from Brazil) Gold Earrings. These are top quality stunning VS2 clarity .50ct (.25ct per ear) 4.0 x 4.0mm 100% Natural Blue Aquamarine! set in 18k White Gold with a screw back fastener for security and peace of mind. We don't take shortcuts, even the screw backs are 18k. MADE IN USA!