Owing to the fact that Tourmaline crystals are long and narrow in shape Tourmaline gems are most commonly, although not exclusively cut into square or rectangular stepped shapes.

• 共同削减： 由于这一事实，即电气石晶体是长期的和狭隘的形状，电气石的瑰宝，是最常见的，虽然不完全是切割成方形或长方形加强的形状。