Belize PRO is a portable diamond verification instrument for loose and mounted stones designed to separate natural diamonds from synthetic diamonds and diamond simulants. It combines a Thermal Probe and Optical Probe in a single probe to determine if the tested gemstone is a diamond, synthetic diamond or diamond simulant. Belize PRO is manually operated but gives an automatic result on its built-in display.
Weight: 0.02 ct+
Size: 2.0 mm +
Colour: D-J
Shape: All
Diamond Simulants: Yes
Mounted Stones: Yes
Key performance metrics measured for the Belize PRO with the ASSURE 2.0 Primary Loose Stone Sample:
Diamond False Positive Rate (optimal rate 0%): 0%
Diamond Referral Rate (optimal rate 0%): 6.2%
Diamond Accuracy Rate (optimal rate 100%): 93.8%
The Primary Loose Stone Sample was tested three times and consists of 350 loose diamonds, 100 loose synthetic diamonds and 50 loose diamond simulants. The stones are 0.02 ct to 0.20 ct in D-J colour.
The measured test speed for the Belize PRO was 175 stones per hour.
Key performance metrics measured for the Belize PRO with the ASSURE 2.0 Primary Mounted Stone Sample:
Diamond False Positive Rate (optimal rate 0%): 0%
Diamond Referral Rate (optimal rate 0%): 3.9%
Diamond Accuracy Rate (optimal rate 100%): 92.9%
The Primary Mounted Stone Sample consists of jewelry pieces with open-back settings. The stones are a mix of diamonds, laboratory grown diamonds and diamond simulants in the D-J colour range and have a minimum girdle diameter of 2.0 mm.
Automated Feed: No
Automated Results: Yes
Automated Dispense: No
Detect or Refer (Synthetic Diamonds): Refer*
Detect or Refer (Diamond Simulants): Detect
Multiple Stones at Once: No
Training Required: No (User manual provided with device)
* stones classified as Type IIa/CVD/HPHT are considered referrals and should be submitted for further testing.
The probe tip should be held at an upright position 90 degrees perpendicular to the table of the gemstone. The user then fully depresses the tip applying constant pressure for the duration of the testing bar shown on the screen. User must always ensure the probe tip is kept clean, and when necessary it should be cleaned with a microfiber cloth as per procedure in the User Manual.
The instrument makes a measurement and displays one of the following results:
Stones classified as Lab-Grown CVD/HPHT/Type IIa are considered referrals and should be submitted for further testing. Stones classified as Simulant or Moissanite are considered diamond simulants for the calculation of ASSURE performance metrics.
Size: 5.0 cm (W) x 19.4 cm (L) x 2.7 cm (H)
Weight: 0.129 kg
Price: 1,299 USD (Jan 2026)
gemlogis/belize-pro
support@jubileediamond.com.hk
+852 2351 7888
ASSURE Tested Dec 2025
