Attributes:Appx Weight in Grams by Width/Length: (each item will vary slightly)3 mm width: 7 in = 2.37 gr, 8 in = 2.64 gr, 16 in = 4.89 gr, 18 in = 5.42 gr, 20 in = 5.85 gr, 24 in = 6.7 gr4 mm width: 7 in = 3.24 gr, 8 in = 3.58 gr, 16 in = 6.57 gr, 18 in = 7.79 gr, 20 in = 8.65 gr, 24 in = 9.65 gr, 30 in = 12.83 gr5 mm width: 7 in = 4.2 gr, 8 in = 4.55 gr, 16 in = 9.44 gr, 18 in = 10.13 gr, 20 in = 11.3 gr, 24 in = 13.27 gr5.5 mm width: 7 in = 4.4 gr, 8 in = 5.82 gr, 16 in = 10.8 gr, 18 in = 11.89 gr, 20 in = 13.77 gr, 24 in = 15.77 gr, 30 in = 18.64 grOther Specs:Clasp / Connector: LobsterManufacturing Process: Machine MadeChain Type: HerringboneMaterial: GoldPurity: 10K
