Can you give me an examples of a 5.6 gram object?
Maybe a pair of earrings or a ring?
http://www.ebay.com/itm/STERLING-FILIGREE-HOOP-style-EARRINGS-weighs-5-6-grams-/370489656608
http://www.jbjewelrystudio.com/Consignments.html
Scroll all the way to the bottom; see ring #2.