The present invention relates to a portable and 360 degrees operational particle blast system comprising a blast device (35) for blasting particles, comprising a blasting wheel (6), the blasting wheel comprising a rotor (6A), having blades (14) for accelerating the particles to be blasted through an exit mouth (33) of the blast device, a stator (6B) with a control cage (17), the blast device further comprising a control system (10). The latter comprises a controller for controlling the speed and the flow rate of the particles to be blasted. The system further comprises a removable, pre-filled, closed recipient (7), suitable to be operationally connected to the blast device, said recipient containing the particles to be blasted, and further comprising i.a. an actuator, acting upon a movable piston (22), causing the particles to flow against the valve to the blasting wheel and means for communicating upon connection of the recipient to the blast device, to the controller of the blast device, the operational parameters, whereby the speed and the flow rate of the blasted particles are determined by the controller solely as a function of the operational parameters received from the recipient.

Systems and methods are directed to selecting unpolished regular-polygonal diamonds; selecting diamond powder based on size, profile and hardness to use as acceleration media; and polishing the regular-polygonal diamonds by accelerating at least the diamond powder using a plurality of spray patterns determined as a function of the respective hardnesses of the diamond powder and the unpolished regular-polygonal diamond, the spray patterns directed at the unpolished regular-polygonal diamonds. The method further includes accelerating the regular-polygonal diamonds and the diamond powder to create the spray patterns; directing the spray patterns so that they overlap causing the diamond powder to polish the regular polygonal diamonds; separating the regular-polygonal diamond from the diamond powder; and repeating the steps of accelerating the regular polygonal diamonds and the diamond powder and the separating until the regular-polygonal diamond is polished.