Attributes:LobsterOvalPolishedSterling silverAppx Weight in Grams by Width/Length: (each item will vary slightly)2.25 mm width: 16 in = 2.12 gr, 18 in = 2.04 gr, 20 in = 2.27 gr, 24 in = 2.72 gr, 30 in = 3.38 gr3.4 mm width: 16 in = 3.6 gr, 18 in = 4.28 gr, 20 in = 4.73 gr, 24 in = 4.91 gr, 30 in = 6.15 gr3.75 mm width: 16 in = 6.4 gr, 18 in = 7.2 gr, 20 in = 8 gr, 24 in = 9.59 gr, 30 in = 11.98 gr5.3 mm width: 16 in = 10.35 gr, 18 in = 10.35 gr, 20 in = 11.49 gr, 24 in = 13.8 gr, 30 in = 17.24 gr5.75 mm width: 16 in = 15.3 gr, 18 in = 17.93 gr, 20 in = 19.91 gr, 24 in = 23.9 gr6.8 mm width: 16 in = 21.6 gr, 18 in = 24.3 gr, 20 in = 27 gr, 24 in = 32.4 grOther Specs:Clasp / Connector: LobsterFinish: PolishedItem Weight U/M: gmChain Type: CableMaterial: Sterling SilverPurity: 925