ASDI 500 - V1


The ASDI-500 is able to detect and extract synthetics and simulants as small as half a millimetre in diameter, at the astounding speed of 700 stones per hour.

Developed to protect the integrity of the watch and jewellery industry, the ASDI-500 automatically sorts very large quantities of batches of round colourless polished melee, detects and extracts synthetics and simulants from among the natural diamonds. The ASDI-500 is the only such system operating today that has the degree of precision to handle stones as small as 0.50 mm (500 microns - hence the name) to 3.80 mm in diameter at an unmatched speed of 850 stones per hour.

Refer rate < 1%.

Simply place the batch - several thousand diamonds - in the hopper, enter the analysis data (weight, diamond reference number, etc.), and on the touch screen click on "START".
The analysis cycle starts with an automated internal calibration - less than one minute - on a reference diamond included in the instrument. All analysis results are stored and retrievable at any time.

Analysis is optimized by our extremely fast BE66 robot with a positioning accuracy of 5 microns. It automatically counts and places all analysed stones in one of the bins: "natural,"refer", "imitation" or "unanalysed".

Developed in collaboration with the Swiss Gemological Institute - SSEF, the ASDI-500 is manufactured and commercialized by UNIMEC SA.


Technical data

 Dimensions  653 x 565 x 844 mm 
 Weight 98.0 Kg 
 Sorting speed 850 stones per hour 
 Voltage 110 - 230 V / 50 Hz / 13 A 
 Diameter of stones 0.50 mm up to 3.80 mm 
 Max. diameter divergence in a batch +/- 0.05 mm