Authentic from Nouvelle Bague, this is an interesting bangle crafted from 18k white gold & sterling, it features shimmering blue and white enamel with 2 gold band on each side of the oval bangle, the front has the two white enamel bands with white gold border and a small diamond accent. This particular bangle stretches open with long wire spring inside the tube, it is pulled apart to allow easy access around the hand. Material & gem: 18k white gold, sterling, enamel & diamond Signed: Nouvelle Bague 750 925 Measurement: inner circumference: 6.5 long x 4mm thick Weight: 11.3 grams.