Diamond gauge, multi-cut, metal

Diamond gauge, metal, multi-cut, oblong. Small enough to fit comfortably in a pocket or wallet, or use the loop to fix to a chain or keyring. The scale along the top is 7cm / 70mm. The sizes listed below are carat (mm). Diamonds are measured in carat (100 points = 1 carat) but synthetic stones (e.g. Moissanite, Cz) tend to be measured in mm. Rounds, 19 sizes from 1 point to 3 carat. Carat (mm): 0.01 (1.4); 0.03 (2); 0.05 (2.5); 0.1 (3); 0.2 (3.8); 0.3 (4.4); 0.4 (4.8); 0.5 (5.2); 0.65 (5.6); 0.75 (5.9); 0.85 (6.2); 1 (6.5); 1.25 (7.0); 1.5 (7.4); 1.75 (7.8); 2.0 (8.2); 2.25 (8.6); 2.5 (9.0); 3.0 (9.3). Pear-cut (carat): 0.25, 0.5, 0.75, 1.0 Oval (carat): 0.25, 0.5, 0.76, 1.0 Emerald-cut (carat): 0.24m 0.5, 0.75, 1.0 Square (carat): 0.24m 0.5, 0.75, 1.0