High Precision Precious Metal Analyzer

High‑precision XRF precious metal analyser for modern jewellery workflows

ElvaX Jewelry Lab is a dedicated precious metal analyzer engineered for fast, accurate jewelry gold testing in retail, refining and assay environments. Using energy‑dispersive X‑ray fluorescence (EDXRF), it delivers non‑destructive analysis of gold, silver, platinum, palladium and their alloys without cutting, filing or damaging valuable pieces. Measurement time is only a few seconds, enabling high‑speed gold testing even in busy buying or trading sessions. Results are displayed simultaneously in percentage and karat, providing a clear pass/fail judgment for gold karat testers handling a wide variety of jewellery items.

Precision Without Compromise

In the precious metals industry, even a minor discrepancy in gold concentration can lead to significant financial loss. At the heart of the ElvaX Jewelry Lab is a 40 kV X‑ray tube with tungsten anode and a high‑performance silicon drift detector (SDD), with Si‑PIN detector options also available. The SDD option is particularly suited for high-volume environments, offering faster processing and superior energy resolution compared to standard detectors.

This combination provides the sensitivity and resolution required for high‑precision gold-testing equipment, delivering analysis accuracy for precious metals and jewellery better than 0.1% when operated correctly. Fundamental parameters algorithms automatically adjust for different precious metal matrices, supporting reliable quantitative results across gold, silver, platinum and palladium alloy ranges.

Application Focused Design – Automated Gold Purity Testing

Whether you are performing karat classification at a retail counter or verifying bullion authenticity, the ElvaX Jewelry Lab is designed for the environment. Its compact footprint ensures it fits easily on desks or counters, while the leaded glass window allows the operator to keep the sample in sight throughout the measurement.

Integrated “compact lab” for automated gold purity testing

Unlike basic gold testing machines, ElvaX Jewelry Lab integrates every core element required for a compact benchtop gold analyzer. The system includes a built‑in high‑accuracy balance, allowing weight to be captured automatically as part of the assay workflow. An embedded printer generates on‑the‑spot assay certificates with chemical composition, weight and price information, supporting traceable transactions and customer records. A rechargeable Li‑ion battery enables up to six hours of autonomous operation, so the precious metal analyzer can be used on the counter or on the road without external power.

​The integrated CCD camera and optional automatic collimator changer provide precise control of the measurement spot. Users can select spot diameters down to around 1 mm depending on configuration and see the exact position of the X‑ray beam on screen, which is critical for testing small features such as links, clasps, inlays and hallmarks. This targeted approach ensures the XRF gold tester interrogates the actual area of interest, even on complex or multi‑component jewellery pieces.

Reliable detection of plating, coatings and non‑standard alloys

One of the key risks in jewelry gold testing is misrepresentation due to gold plating or non‑standard compositions. ElvaX Jewelry Lab is specifically designed to detect coatings and possible gold-plating during composition analysis. When the instrument identifies signals indicative of plating or non‑homogeneous structures, an on‑screen alert is displayed so the operator can investigate further. This capability makes the system an effective automated gold purity tester for buyers, refiners and assay offices needing robust fraud protection and quality control.

The analyzer measures the main alloying elements in gold alloys, including copper and silver, and performs equally well on silver, platinum and palladium alloy systems. Application studies show excellent correlation between laboratory reference values and ElvaX Jewelry Lab results for precious alloys, demonstrating the stability and repeatability expected from top‑tier benchtop gold analyzers.

Fast and Easy Operation for High Throughput Environments

The ElvaX Jewelry Lab is designed for high throughput operation, combining fast measurement speed with simple and easy control. The integrated Windows EC computer and touchscreen display allow direct operation of measurement methods, collimators, and data handling without the need for an external PC.

The system features an ergonomic design with a compact footprint, allowing it to fit easily on jewellery counters or laboratory benches without occupying excessive space. Leaded viewing glass keeps the sample visible during analysis, providing reassurance when testing high-value gold and silver items.

A customer-facing display shows both weight and composition during measurement, making the gold testing process transparent and easy to explain.​

Robust hardware

The analyser has a compact enclosure and a weight of around 7 kg. It operates on standard 90 to 240 V, 50 or 60 Hz power or via an internal battery, with typical power consumption of about 40 W. This combination of portability, durability, and analytical capability makes the ElvaX Jewelry Lab suitable for retail stores, refineries, assay laboratories, banks, museums, and institutional users.

By combining a high-performance XRF engine with integrated scales, automated collimation, plating detection, and streamlined workflows, the ElvaX Jewellery Lab provides a complete solution for jewellery gold testing, extending beyond basic gold-testing machines and handheld XRF gold testers.