2mm - 18 = 9g. 3mm - 18 = 15g. 4mm - 18 = 21g.5mm - 18 = 35g. 6mm - 22 = 55g. 7mm - 22 = 75g. 8mm - 24 = 115g. Please note that the weight of an item can vary (plus or minus) a few grams. Since we list multiples of each item and the majority of our items are handmade, the weights will vary. With all jewelry with stones, stone sizes and amounts are figured by calculation. (For an accurate total, you would have to remove the stones from the settings). During measurements, there is some degree of calculation, so it is an approximation.
Please keep in mind that our photos are magnified to show detail. Please see the dimensions for the precise size. Please zoom in on the photos and see the condition for yourself; pictures are part of the description.