If you've ever visited a jewellery shop, you've probably noticed that the jeweller keeps a scale handy. Jewellers rely on scales and balances to assess the quality of certain materials and to count gems. The type of weighing device needed for jewellery weighing depends on the specific requirements for each application. To help you choose the right scale or balance for your needs, this post will take a look at the different features and functions of jewellery scales and balances.
It's important to make sure your balance contains the weighing units necessary to weigh jewellery. Grams are the most important, but weighing units such as carats, pennyweights, mommes, avoirdupoids, troy ounces, and grains can prove helpful. For more information on weighing units and how they're used, go here.
If you plan to buy or sell by weight, the law requires that scales and balances used must be approved for trade. This includes not only selling jewellery, precious metals or gems, but also purchasing scrap jewellery from customers.
Weighing devices used for counting applications don't have to be trade-approved, but they're helpful for counting beads and other small pieces when creating jewellery.
Make sure you think about your capacity and readability requirements before choosing a balance. You might need a device with higher readability to weigh very small gems. If you'll be weighing raw materials, a balance with higher capacity and lower readability can meet your needs.
Below-balance weighing and density kits help users identify the type and appraise the value of materials based on density. Jewellers working with precious gems or metals can perform density tests to identify different gems and also to determine quality, helping them price their products accordingly. Density tests can help verify the authenticity of gems and metals. Density determination works if the object doesn't have gems or attachments, as added materials can interfere with the results.
Types of balances used in jewellery
Precision balances are ideal for bulk-weighing raw materials that will be refined and cut into jewellery pieces. An analytical balance is useful for assessing the density of gems. Many density tests are done in water, but density determination for gems is performed in heavy liquids. An analytical balance is useful for this, as it lets you specify the density of whichever liquid you're using.
As we noted earlier, instruments used to measure products sold by weight must be approved. Recently, Adam Equipment's HCB portable compact balance was approved for trade use by NTEP. Jewellery and pawn shops rely on these balances because they offer the high precision needed for precious materials, with the ease of use and portability provided by top-loading balances. They also feature internal calibration, which isn't required but does save time.
Compact balances can be handy when traveling or checking raw materials, as they're portable and easy to use. Some are equipped with a draft shield, which helps eliminate breezes that might cause lightweight samples to move around on the weighing pan.
We've provided you with some details about scales and balances used for measuring jewellery. We hope you can use the information to make an informed decision about choosing a weighing instrument for your jewellery weighing needs. Feel free to contact us if you have any questions, and follow us on social media for Adam news and more blog posts. Thanks for reading!