Chaumet Ladies Rings. SKU: 080301. Metal Type: Yellow Gold. Metal Stamp: 18k. Gem stone type: Diamond. Stone weight: 0.02ct. Chaumet 18k Yellow Gold Les Eternelles De Chaumet Rubans Wedding Band. The wedding band is crafted in 18-carat yellow gold, adorned with a brilliant-cut G VS+ diamond of 0.02 carat, and features a 3.5mm width.