Technical comparative weights TABLE OF COMPARATIVE WEIGHTS
To use the table below, simply take the unit figure of the metal to which comparison is required and then follow the line to the right or left of this figure that is the relative weight unit for the chosen metal.
Typically, a silver model may be made for subsequent casting using the cuttlefish method producing a casting in 18ct Yellow Gold HB. The process is shown in the table below: PURE
A signet ring has been made out of silver and weighs 7.9 grammes. Looking at the table along the sterling silver horizontal line and then matching this with the intersection of the 18ct Yellow Gold HB gives the number 1.50
So, the approximate weight of a similar ring cast in 18ct HB would be:
7.90 grams x 1.50 = 11.85 gram in 18ct Yellow HB Gold