JOTW 14k White Gold 1.6mm Hollow Box Chain - 16" to 30" Available (9K-OIEW-CJN8) 14k White Gold! Choose either a 16 inch, 18 inch, 20 inch, 22 inch, 24 inch, or 30" necklace. 16"=3.57g, 18"=3.87g, 20"=4.30g, 22"=4.7g, 24"=5g, 30"=6.25g. This Chain measures 1.6mm.