Ohaus Jewellery Balances – High-Precision Weighing for Precious Metals & Gemstones
Ohaus jewellery balances are precision weighing instruments designed for the accurate measurement of precious metals, gemstones, pearls, and fine jewellery in professional workshop, retail, and trading environments. With readability from 0.001 g to 0.01 g and multiple weighing units including grams, troy ounces, pennyweights (dwt), carats, and grains, they provide the versatile, accurate weighing capability that jewellers, goldsmiths, precious metal dealers, and pawnbrokers require for valuation, quality control, and trade applications.
Ohaus is one of the world’s most respected weighing instrument manufacturers, with over 100 years of experience producing precision balances for professional and scientific use. Their jewellery balance range reflects this heritage — combining high-resolution load cell technology with robust, compact construction and intuitive operation suited to the demands of a busy jewellery workshop or retail counter. Backlit displays provide clear readouts in any lighting condition, and tare functions allow containers and trays to be zeroed out instantly for net weight measurement. Many models include a protective draft shield to ensure stable readings when weighing fine gemstones and small items susceptible to air movement. Trade-approved models are available for legal-for-trade precious metal and gemstone transactions.
Key Features
- Readability from 0.001 g to 0.01 g for high-precision precious metal and gemstone weighing
- Multiple weighing units — grams, troy ounces (ozt), pennyweights (dwt), carats (ct), and grains
- Backlit display for clear weight readout in workshop and retail lighting conditions
- Tare function for instant net weight measurement with containers and trays
- Draft shield on selected models for stable readings when weighing fine gemstones and small items
- Compact, robust construction suited to workshop bench and retail counter use
- Trade-approved models available for legal-for-trade precious metal and gemstone transactions
- RS-232 connectivity on selected models for data output and record keeping
Common Applications
- Jewellery workshops — weighing precious metals for fabrication, repair, and quality control
- Jewellery retail — accurate weighing for pricing, valuation, and customer-facing transactions
- Precious metal trading — gold, silver, platinum, and palladium weight verification for buying and selling
- Pawnbroking — accurate precious metal weighing for valuation and trade
- Gemstone grading — carat weight measurement for diamonds, rubies, sapphires, and other gemstones
- Hallmarking and assay — precise weight measurement for hallmarking submission and compliance
All Ohaus jewellery balances are available with UKAS-traceable calibration certificates on request. Browse the range below to find the right readability and capacity for your application. Contact our team if you need guidance on trade approval or unit configuration.
Frequently Asked Questions
What weighing units do Ohaus jewellery balances support?
Ohaus jewellery balances support a range of units relevant to the jewellery and precious metals trade, including grams (g), troy ounces (ozt), pennyweights (dwt), carats (ct), and grains (GN). The available units vary by model — check individual product listings to confirm the units supported on the specific model you are considering.
What is the difference between a carat and a gram for gemstone weighing?
In gemstone weighing, a metric carat (ct) is equal to 0.2 grams. This is the standard unit for measuring the weight of diamonds and other gemstones. It is distinct from the carat used to describe gold purity (e.g. 18 carat gold). Ohaus jewellery balances with carat mode display gemstone weight directly in metric carats for straightforward gemstone grading and valuation.
Are Ohaus jewellery balances trade approved for buying and selling precious metals?
Trade-approved models are available in the Ohaus jewellery balance range, carrying OIML Class II or Class III approval for legal-for-trade precious metal and gemstone transactions. Please check individual product listings or contact our team to confirm trade approval status for specific models. For regulated precious metal trading, confirm the required approval class with your local Trading Standards authority.
Do Ohaus jewellery balances include a draft shield?
Selected models include a draft shield to protect against air currents when weighing fine gemstones and small items at high resolution. For workshop and retail environments where air movement from ventilation or nearby activity could affect readings, a draft shield is recommended for consistent accuracy. Check individual product listings to confirm draft shield availability on specific models.
Are UKAS calibration certificates available?
Yes. UKAS-traceable calibration certificates are available on request for all Ohaus jewellery balances. Contact our team when ordering to arrange calibration documentation.
