I said with Ceramic Magnet: This pendant has a therapeutic function. It is made with a ceramic magnet. Ceramic magnets are used to balance cells that have become misaligned in the body, due to different factors, stress, low defenses, anguish, etc. The ceramic magnet has two poles, the North (blue color) its function is to relax and the South (black color) to tone. It is set with a ferrule with 925 silver brackets. Dimension of the pendant:. Total diameter 3 cm. All our rings, bracelets, slaves, chokers, charms are made in all sizes. Note: the South pole of the magnet should not be used in people with hypertension, diabetes or pacemakers, they can only use the North pole.