Definition
Troy ounce
The unit precious metals are priced in, equal to about 31.1 grams. It is heavier than the ordinary avoirdupois ounce of about 28.3 grams, which is a difference of nearly ten percent.
This matters when you convert a metal price per troy ounce into a cost per gram for a piece, because using the ordinary ounce understates the cost of the metal in the piece.
Tools that use this term
Jewelry Material Cost Calculator
Add up the metals, findings and stones in one piece of jewellery from quantity and unit price, and work out the cost per gram of wire or sheet.
Jewelry Pricing Calculator
Turn the cost of making one piece of jewellery into a break even price, a retail price and the wholesale and premium prices that follow from it.
Wire Length Calculator
Work out the wire needed for wrapped loops, coils, chain links or rings, from the dimensions and the wire gauge, with a waste allowance.