Ohaus Precious Gems balances are the full line of diamond, colored stone and jewelry weighing products ranging from high-precision analytical benchtop balances to handheld scales. Whether you need to measure in carats, grams, troy oz, grains, taels, pennyweights, mommes or other units, Ohaus has a product for your needs. Please browse our selection below.

Ohaus Sapphire 500 The Sapphire 500 is our new capacity 500g x 0.1g scale. For ease of use it features the same 2 button operation and high contrast LCD display found on the Sapphire 10 model. The Sapphire 500's jewelry weighing units of g, oz t, ct and dwt make it perfect for appraisals, bench, showcase and inventory applications. Capacity: 500 g (2500 ct) Readability: 0.1 g (0.5 ct) Units: ct, g, oz t, dwt, pc, oz

Specifications Capacity: 500g (2500ct) Readability: 0.1g (0.5 ct) Weighing units: ct, g, oz t, dwt, pc, oz Weighing modes: Parts counting Repeatibility (Std. Dev.) (g): 0.1 Linearity (g): plus/minus 0.1 Tare range: To capacity by subtraction Over range capacity: 103% Stabilization time (seconds): 3 Operating temperature range: 50F to 104F/10C to 40C Operating Humidity Range: 10% to 85% RH Power requirements: AC Adapter: 100, 120, 220, 240 VAC 50/60 Hz or 9V battery Display (in/cm): 0.7/1.8 Display type: LCD Pan size (in/cm): 5 x 5.75/12.7 x 14.6 Dimensions WxHxD (in/cm): 6.75 x 2.4 x 8.25/17.1 x 6.2 x 21 Net Wt. (lb/kg): 1.8/0.8 Shipping Wt. (lb/kg): 3.5/1.6 Auto shut-off: Programmable on/off Calibration: Digital from keypad