The magnetic tumbler is an automatic polishing process that almost eliminates the bombing of cyanide, which needs to be stripped and pulsate. The tumbler is driven by a powerful rotating magnet in the finishing bowl base. The whole precise polishing process is completed in 30 minutes, just putting your jewelry, steel pin, water, and special polishing compounds in the bowl, and then pressing "on". The polishing process is specially designed for polished complex details, tiny cracks, and multiple , but uneven surfaces. Magnetic tumbler can be used to deal with the integrity of some stones, such as cubic zirconia (CZ), ruby, sapphire and diamond., Manufacturer: ZXZZAS