goldmath

BIS purity · wastage · making · GST · offline

Gold jewellery price calculator — making charges, wastage & GST

Rebuild the jeweller's quote at the counter from gross weight, hallmark purity and the board rate you type in—then see exactly which rupees are negotiable and which are fixed. No live rates, no tracking; the page's own security policy blocks every network call.

Build the quote

Metal
Board rate
Wastage (VA)

Extra weight-% charged at the metal rate. 8% on 10 g prices 10.8 g of metal.

Making charges
Stones / other

Passed through as-is; kept out of the metal maths.

GST convention

Both are real billing structures. The active one is printed on the breakdown below.

Display

The breakdown

Negotiable ₹0.00 0% of this quote
Fixed ₹0.00 Negotiable ₹0.00

Total quote ₹0.00

Verify a bill

Type the total from the shop's bill and goldmath back-solves the implied making charge — the number to open your haggle with. Uses the metal, wastage, purity, rate and GST convention set above.

Buy-back / melt value

The melt value of the same ornament — net weight × fineness × rate, minus a deduction you set. This excludes making, wastage and GST: the honest reason making charges are money you never see again. It is a reference ceiling; real offers usually deduct more.

Estimated melt value ₹0.00

Compare two shops

Save the current quote as A, change your inputs, then save as B to see which shop's making + wastage is higher and by how much.

Saved quotes

No saved quotes yet. Build a quote above and press “Save this quote”.

The constants, cited

Every number in the maths comes from this card. Each fact carries its source and the date it was verified.