Recently I took my gold to one of the regular shops I go to & asked them to weigh all items for me separately since I wanted to sell them. When I came home & compared the grams mentioned from the shop & on the receipts I was totally shocked because if the original gold weighed 20.10 they mentioned on the bill 22.20 ... so you can see the difference ... I saw this on all the receipts the difference was like this only .... so one tip is if you have a small weighing scale with you n you can weigh at the time of buying in front of the sales person they wont be able to cheat you for these extra milligrams & grams.