This round box chain comes in 14k yellow gold and has a width of 1.6 millimeters.
Product Details:
Chain Information : 
|  Metal :  | 
 14K Yellow Gold  | 
| Chain Type :  | 
Box | 
| Clasp :  | 
Lobster Clasp | 
| Width :  | 
1.60 mm | 
Approximate Weight:
| Size | 
Weight | 
|      16'' | 
    6.2  grams  | 
|     18''  | 
     7.1  grams  | 
|     20''  | 
     7.8  grams  | 
|     24''  | 
     9.4  grams  |