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The client required a diamond screener solution that could accurately test both loose stones and mounted jewellery. The hardware was ready. Still, they needed an innovative Android app to connect via Bluetooth, capture high-resolution images, and process UV light analysis.
Technostacks built a mobile-first solution powered by TensorFlow ML, OpenCV image processing, and C++ firmware, ensuring auto-detection, 360-degree viewing, low power usage, and automated certification. The result: precise, real-time testing without the need for external screens or computers.
The client required 99% testing accuracy to certify the stones.
Bulk testing through transparent bags, mounted jewellery, and loose stones required support.
Bluetooth integration had to be seamless and consistent across devices.
Low power consumption was critical for prolonged testing sessions.


Technostacks developed a native Android application designed to integrate seamlessly with the client’s hardware.
Identifies diamonds as small as 0.002 ct.
Jewellery and rings tested in full detail.
Enabled high-precision UV light testing and diamond color detection.
Built in C++ for energy efficiency and stability.
Smooth BLE integration with SmartPro devices.
Automated reports with two-view results, shareable via email.

The SmartPro Diamond Screener App delivered a complete end-to-end testing experience for the client:
With Technostacks AI-powered mobile app, the client set a new benchmark in diamond screening. From 99% accuracy and bulk testing to 360-degree viewing and automated certification, this solution not only supported the hardware but also elevated the entire diamond testing process.
For jewellery technology innovators, this case study proves one thing: precision, automation, and efficiency can work together to shine.
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