XRF Fluorescence Spectrometer for jewelry
author: Yilia
2023-02-01
To accurately assess whether a piece of jewelry is made of precious metals, and to give customers confidence in what they will buy, jewelers may use various methods to test jewelry , including testing in front of the customer.
Verification of metals by designers and manufacturers is especially important as many jewelers have switched to recycled gold and silver as a raw material source. According to the USGS, approximately 650 tonnes of new and old scrap silver were recovered in 2021, around 8% of apparent consumption. In that same year, approximately 90 tons of new and old gold scrap were recycled, equivalent to around 36% of reported consumption. Since gold and silver can come from a variety of sources, from dental fillings to catalytic converters, it's a good idea to confirm the contents before the design and manufacturing process begins, and then again before it reaches the dealer. consumer.
Verification tests used by companies to combat misidentified metal hazards include the scratch and acid test, which is widely used but not very accurate. The most accurate method is the fire test where the piece is cast, but this method destroys the sample. Laboratory methods with expensive machines require extensive sample preparation and time spent shipping parts to the laboratory. Finally, there is portable X-ray fluorescence (XRF), a non-destructive method that measures multiple elements in seconds.
X-ray fluorescence (XRF) technology is a fast, simple, and non-destructive solution for analyzing metals and alloys. Portable XRF precious metal analyzers that can be placed directly on the jewelry counter can identify carat and even determine the presence and concentration of other alloy trace elements.
As we mentioned, the old low-tech scratch and acid test that many retailers use to test for gold is not very accurate and is potentially dangerous. When using acid to check for gold content , jewelry must be scratched on a stone to obtain flakes or a streak of gold that can be tested. That means you're rubbing off some of the material and then adding a few drops of corrosive acid to the gold streak, which could destroy the design or value of the piece, as well as burn your fingers. You certainly don't want to do that to a new piece of designer jewelry while a customer watches and judges whether or not he wants to buy it.
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