Estimate how much usable fine gold your old jewellery contributes toward a new piece, and calculate the remaining metal requirement after an assumed recovery rate.
The calculation first converts old jewellery into fine-gold content. A recovery percentage is then applied to estimate how much of that fine gold is available for the new item. The target piece is separately converted into its required fine-gold content.
Old jewellery is commonly an alloy, so its gross weight is not equal to pure gold content. Comparing gross scrap grams directly with the target product can therefore overstate how much metal is actually available.
A negative fine-gold top-up means the modeled usable fine gold exceeds the target's fine-gold requirement. That does not mean the excess can automatically be converted into the exact new alloy without further balancing.
No. The tool compares their fine-gold content separately.
Because not all measured scrap material necessarily becomes available as usable feed in the modeled process.
No. Making charges, labour, stones, taxes and commercial adjustments are separate.