Round Box Chain in 14k Yellow Gold For Sale at 1stDibs 14k Yellow Gold 1.8 millimeters Round Box Chain Necklace Overstock Solid 14K Yellow Gold Box Chain Necklace, 16" 18" 20" 24" 26 28 30 0 14K Yellow Gold Filled 1.17mm Round Box Chain 6.5 7 7.5 8 Inch Etsy 14k Yellow Gold 1.8 millimeters Round Box Chain Necklace Overstock 14k Solid Yellow Gold Round Box Chain, Link Chain, 1.6mm, 2.5mm, 3.6mm. This round box chain comes in 14k yellow gold and has a width of 1. 8 millimeters. Product Details: Chain Information : Metal : 14K Yellow Gold Chain Type : Box Clasp : Lobster Clasp Width : 1. 80 mm Approximate Weight: Size Weight 16'' 3. 1 grams 18'' 3. 5 grams 20'' 3. 9 grams 24'' 4. 7 grams