One of the most noticeable differences between pink tourmaline and pink sapphire is the color. Pink sapphire is a true pink color with a slight purplish hue, whereas pink tourmaline can range from a pale pink to a deep magenta. The shade of pink tourmaline is determined by the type of iron and manganese impurities in the crystal. Pink tourmaline is known for its range of colors, while pink sapphire is more limited in its color options.