Cartier Trinity Diamond Sapphire Ruby 18k Yellow Gold Grooved Band Ring SZ 49. This it is one of Cartier's popular designs, the Trinity Rolling Grooved bands ring, crafted in solid high polished finish 18k yellow gold. Around the entire band is designed with a grooved style, each with a different gemstone, one with six round cut diamonds, one with six sapphires and the other with six rubies. It is signed by the designer with the metal content, ring size and serial number. Material: 18k yellow gold Hallmark: Cartier 750 49 906655 Ring Size: 5 European: 49 Measurment: Band: 3.5mm wide Diamond: 0.20pts Color: F Clarity: VS1 Cut: Very Good Sapphires: 25 points Rubies: 25 points Weight: 12 grams Stock#: 54384