The method uses the irradiation of diamond-containing rocks with X-rays, under which 70-80% of diamond crystals send out the luminescence radiation. The method is widely used for diagnostics of diamonds and their subsequent extraction. It is taken into account that the use of more powerful irradiation sources is impossible because of disruption of physical properties of crystals.

The unique cathode luminescence installation, permitting to reveal up to 97-98 % of diamonds or other jewel stones without disruption of their physical properties, is developed in the All-Russian Scientific-Research Institute of Mineral Resources, named after N.M.Fedorovsky.

The small-sized electronic accelerator, generating the low—intensive bundle, is in a basis of the setup.

The weight of the setup is no more that 20 kg, power consumption 300 watt, ,power supply is handled from the network of alternating current 220 V.

In intensity of exited luminescence of diamonds, the installation is in two-three orders higher than other X-ray installations.

At an irradiation by an electronic bundle, diamonds of all types, including nonluminous under a X-ray irradiation. It allows to product additionally up to 10-30 % of diamonds from diamond—containing ores and placers, without some special expensive operations.

The setup can be used independently for an manual ore sorting or can to be put (placed) into automatic enrichment fabrique industrial (factory) systems instead of the traditional X-ray irradiator.

The diamond-prospecting and diamond-mining-benefication enterprises can be as potential consumers of the setup.