Automated Melee Screening for melee diamonds less than 0.003ct.

Rapidly and automatically screen, verify, and disclose the integrity of diamonds down to the smallest melee range.

AMSMicro provides an automated and rapid verification of up to 2,200 diamonds per hour in the 0.001 carat to 0.0033 carat (Ø0.6 to Ø1.0mm) size range, significantly enhancing the efficiency of the process for volume screening diamonds of this size.
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  • Screens the smallest diamond sizes to ensure no synthetic diamonds are in your natural diamond parcels
  • Ideal for a jewellery/watch manufacturing/production environment


  • Screens out all laboratory-grown diamonds and simulants
  • <3% natural diamonds are referred for further testing
  • Reduces the amount of time required to screen small melee diamonds
  • Fully integrated unit
  • Automatically measures and dispenses, no user interpretation required
  • Exportable screening reports

Features and Specifications

  • 0.001–0.003ct size range (0.6–0.9mm diameter)
  • Round brilliant cuts, loose diamonds
  • Colourless to near-colourless
  • Screens 2200 diamonds/hr
  • Hopper capacity 200ct
  • On-board humidifier for optimal screening
  • Dispensed into one of the four results bins: pass, refer, lab-grown, non-diamond

Learn more about the AMSMicro and its capabilities

Have a question? You may find an answer in our FAQs. But you can also contact us by filling the form below.

Learn more about the AMSMicro and its capabilities

Have a question? You may find an answer in our FAQs. But you can also contact us by filling the form below.

More Products

Screening of both loose diamonds and jewellery pieces.
Automated screening device for small polished diamonds.
Distinguish natural from synthetic diamonds and simulants.


Our team of specialised technicians ensure a high standard of product support. Give us a few details and we’ll offer the best solution.

Support for Diamond Verification Instruments


Have a question about the AMSMicro? You may find your answer below.
Round brilliant melee in the 0.6–0.9mm diameter size range.

To eliminate any risk of diamonds sticking together they should be clean and free of any grease.

To ensure that all the melee loaded into the instrument have been screened and dispensed, parcels should be weighed before and after screening. This checks that no diamonds have got stuck in the system – possibly due to grease or static. Owing to the size of the melee, we recommend a balance that can weigh to 5dp if possible, or at least have an accuracy so that you can ensure not even one stone is left in the machine.

It is recommended that the AMSMicro calibration is checked every 30 days. A calibration disc is supplied with each AMSMicro machine. The calibration disc should be stored in a safe place.

The calibration operation is simple and on-screen instructions are displayed on the AMSMicro touch screen that will guide the user through the process.

A related instrument (AMS2) had the option to fit an external humidifier if required. AMSMicro comes with a built-in humidifier to reduce electrostatic charge between samples by raising the humidity inside the machine.
The instrument has a built-in user interface but if required, you can connect an external keyboard and mouse via the USB ports. The instrument also has HDMI to connect to a monitor and an ethernet port for the internet.

Contact Us

Our diamond and technology experts are available for instrument sales, demos and discussions regarding your diamond verification requirements.