Metal Purity : 14K Yellow Gold. 20: 4.5-5.5 grams. 26: 6.5-7.5 grams. The weight and width are approximate.
Please expect it to be +/-10% difference. The item has to be in its original unworn condition and should be with the tag. There should not be any damage on the item or the item should not be customized by any other jeweler.