Discussing clothing material weight has been beaten to death, I think, but the new jewelry kits should probably be significantly lighter. 1.5kg is 3.3lbs or so, and a majority of jewelry is going to be things like rings and necklaces, making that a little steep to be the average weight.
I suggest reducing the weight to around 500g or 1lb which is still vastly heavier than something like a ring, but probably on point for most gold chains and other heavy jewelry pieces.
