Stone Testing Capability

Weight: 0.005 ct-0.2 ct
Size: 0.98 mm-3.80 mm
Colour: D-J
Shape: Round
Diamond Simulants: Yes
Mounted Stones: No

Instrument Performance

The below results demonstrate the performance of the M-Screen+ with the ASSURE 1.0 Core Sample:

Diamond False Positive Rate (optimal rate 0%): 0%
Diamond Referral Rate (optimal rate 0%): 4.1%
Diamond Accuracy Rate (optimal rate 100%): 95.9%
Speed (stones tested per hour): 12,317

The Core Sample consists of 1,000 loose diamonds, 200 loose synthetic diamonds and 200 loose diamond simulants. The stones are 0.02ct to 0.20ct in D-J colour.

The below results demonstrate the performance of the M-Screen+ with the ASSURE 1.0 Smalls Sample:

Diamond False Positive Rate (optimal rate 0%): 0%
Diamond Referral Rate (optimal rate 0%): 9.1%
Diamond Accuracy Rate (optimal rate 100%): 90.9%
Speed (stones tested per hour): 12,317

The Smalls Sample consists of 1,000 loose diamonds, 200 loose synthetic diamonds and 200 loose diamond simulants. The stones are 0.005 ct to 0.02 ct in D-J colour.

Instrument Capabilities

Automated Feed: Yes
Automated Results: Yes
Automated Dispense: Yes
Detect or Refer (Synthetic Diamonds): Refer
Detect or Refer (Diamond Simulants): Refer
Multiple Stones at Once: Yes
Training Required: No

M-Screen+ dispenses the stones into four categories:

1. ‘Needs rescreening’: stones were not well positioned
2. 100% natural diamonds
3. Refer
4. Diamonds out of spec or simulants

‘Refers’ could contain potential synthetic diamonds and diamonds. The referrals should be tested further for full verification.

Instrument Specifications

Size: 45 cm (W) x 30 cm (D) x 55 cm (H)
Weight: 45 kg
Price: 63,000 USD (February 2019)

Contact information

ASSURE Tested March 2019
ASSURE ID: 274139