DiamondProof

DiamondProof is a user-friendly desktop diamond verification instrument designed to screen mounted and loose diamonds, synthetic diamonds and diamond simulants. DiamondProof provides automatic results which are displayed on the integrated high-resolution touchscreen display.

Download Instrument Fact Sheet (ASSURE 2.0 - Novice Operator)

Instrument Performance

Key performance metrics measured for the DiamondProof with the ASSURE 2.0 Primary Loose Stone Sample:

Diamond False Positive Rate (optimal rate 0%): 0%
Diamond Referral Rate (optimal rate 0%): 5.1%
Diamond Accuracy Rate (optimal rate 100%): 94.9%

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 0.03 ct to 0.20 ct in D-J colour.

Key performance metrics measured for the DiamondProof with the ASSURE 2.0 Smalls Loose Stone Sample:

Diamond False Positive Rate (optimal rate 0%): 0%
Diamond Referral Rate (optimal rate 0%): 3.8%
Diamond Accuracy Rate (optimal rate 100%): 96.2%

The Smalls 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 0.005 ct to 0.02 ct in D-J colour.

The measured test speed for the DiamondProof was 281 stones per hour.

Key performance metrics measured for the DiamondProof with the ASSURE 2.0 Primary Mounted Stone Sample:

Diamond False Positive Rate (optimal rate 0%): 0%
Diamond Referral Rate (optimal rate 0%): 4.9%
Diamond Accuracy Rate (optimal rate 100%): 95.1%

The Primary Mounted Stone Sample consists of jewelry pieces with open-back settings containing a total of 303 stones. 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.

Key performance metrics measured for the DiamondProof with the ASSURE 2.0 Smalls Mounted Stone Sample:

Diamond False Positive Rate (optimal rate 0%): 0%
Diamond Referral Rate (optimal rate 0%): 4.3%
Diamond Accuracy Rate (optimal rate 100%): 95.7%

The Smalls Mounted Stone Sample consists of jewelry pieces with closed-back settings containing a total of 54 stones. The stones are a mix of diamonds, laboratory grown diamonds and diamond simulants in the D-J colour range and have a girdle diameter between 1.0 mm and 2.0 mm.

Instrument Capabilities

Automated feed: No
Automated results: Yes
Automated dispense: No
Detect or Refer (synthetic diamonds) Refer
Detect or Refer (diamond simulants) Refer
Multiple stones at once: Yes
Training required: No (Operating Manual provides guidance on installation and operation)

DiamondProof provides automatic interpretation of screening results which are illustrated on the touchscreen display. The following color-coding indicates the category of stone:

Blue coloring: Diamond

Yellow coloring: Refer

Clear coloring: Out of range

Loose stones with Yellow or Clear coloring were repositioned on the cradle and retested to verify the result. Stones that remain Yellow or Clear are considered Referrals and should be identified by tests typically carried out in a gemological laboratory.