This is a beautiful authentic triple band rings by Cartier, it is crafted from 18k yellow, white and pink gold with a high polished finish from Cartier's Trinity collection and is composed of three interlocking 2.5mm wide semi dome bands. The rose gold ring has the designer hallmark, serial number and metal content.Hallmark: Cartier 750 48 R17867Material: 18k pink white and yellow goldMeasurement: 5mm wide x 1.5m thickEach band is: 2.5mm wideWeight: 4.3 grams