Diamond Gauge
| This is a stencil type gauge with punched-out
holes for measuring brilliants of weight 0.01 to 6.00 ct. The
carat weight is engraved adjacent to the openings. The gauge is
applicable for very well cut brilliants. For flat or high stones
5 to 10 % of the given weight should be added or subtracted
(Fig 391 ). Fig 391 Diamond Gauge |
 |
Carat Indicator
| The carat indicator contains sample stones of
diamond-like imitations in various sizes provided. with the
relevant weight in carats of the brilliant. The weight is
estimated by comparing visually the size of the sample with that
of the brilliant to be estimated (Fig 392). Fig 392 Carat indicator |
 |
| Formula for Calculating the Weight | Modernizing Old Cut |