Cartier Platinum Diamond Halo Ring. GIALadies Cartier diamond ring. This ring features a Brilliant cut weighing 0. 37 carat weight of (VVS) in clarity and (F) in colour (GIA certificate ). Measuring 4. 60 x 4. 63 x 2. 81mm. Excellent symmetry. It is surrounded by a halo of Brilliant cut diamonds weighing 0. 20 total carat weight. Current finger size: 5 3 4. This ring can be resized. Hallmark: Cartier Very Good Condition Accompanied by the original Cartier box and papers. GIA certificate.