The Guardian is a compact, affordable, and AI-powered Lab-Grown Diamond Detector designed for jewellery retailers, chain stores, wholesalers, and manufacturers. Built to deliver fast and reliable screening, Guardian Pro accurately identifies Lab-Grown Diamonds (CVD & HPHT) while providing positive identification of AD, CZ and Moissanite in loose diamonds, mounted jewellery, rings, bangles, necklaces, and other jewellery formats.
With a generous large scanning area, Guardian Pro can screen everything from small melee diamonds starting at 0.003 carats to large jewellery pieces, making it an ideal solution for daily diamond verification.
✔ AI-Based Auto Detection Technology
✔ Detects Lab-Grown Diamonds (CVD & HPHT)
✔ Positive Identification of AD, CZ & Moissanite
✔ Screens Loose Diamonds & Mounted Jewellery
✔ Detects Stones from 0.003 Carats Onwards
✔ Over 99% Detection Accuracy
✔ Fast & Accurate Screening Results
✔ Print, Download & Share Reports
✔ ERP-Friendly Data Management
✔ Trusted by Customers Across 45+ Countries
Dimensions | 313 × 321 × 230 mm |
Power Requirement | 100–240 V |
Operating Temperature | 5°C to 35°C |
Display | Integrated Touchscreen Mobile Interface |
Weight | 10.7 kg |









Automatically detects Lab-Grown Diamonds (CVD & HPHT) and positively identifies AD, CZ and Moissanite in loose parcels, polished diamonds, rough diamonds, and mounted jewellery.
The spacious 6″ × 5″ scanning platform allows efficient screening of necklaces, rings, bangles, earrings, and loose diamonds in a single system.
Accurately screens diamonds starting from 0.003 ct and above, making it suitable for both melee and larger stones.
Delivers over 99% accuracy in automatic detection mode while offering additional verification through advanced quad-screening technology.
A unique lifting mechanism enables precise focusing for jewellery and diamonds of different sizes, improving screening accuracy.
Choose between Automatic Mode and Manual Mode depending on your screening requirements. Typical scan completion ranges from 25–90 seconds.
Features multiple imaging views including:
Features multiple imaging views including:
Built-in magnification and positioning tools help users inspect suspicious stones with greater precision.
Scan results are automatically stored within the system and can be searched by:
Generate professional screening reports instantly and:
Specialized rotating trays simplify screening of eternity rings and eternity bangles for improved workflow efficiency.
The intuitive interface eliminates the need for advanced gemological expertise, allowing staff to operate the machine confidently after basic training.
Exclusive internal long UV illumination minimizes false-positive results and improves screening reliability.
Do you have any questions or requests? Use this form to contact our specialists.