This classic box chain comes in 18k yellow gold and has a width of 0.85 millimeters.
Product Details:
Chain Information : 
|  Metal :  | 
 18K Yellow Gold  | 
| Chain Type :  | 
Box | 
| Clasp :  | 
Lobster Clasp | 
| Width :  | 
0.85 mm | 
Approximate Weight:
| Size | 
Weight | 
|      16 | 
    3.4  grams  | 
|     18  | 
     3.8  grams  | 
|     20  | 
     4.2  grams  | 
|     24  | 
     5.3  grams  |