Kunzite is the best known variety of a mineral called spodumenethe. Varying from shades of pale powder pink, to more intense violet tones, it gets its delicate colour from trace amounts of manganese, and has a highly pleochroic - meaning kunzites seem to change colour when observed from different angles. Owing to it's 'feminine' colour, kunzites are often termed the 'woman's stone' and claimed to provide support to young mothers by calming overactive children. Kunzites have the ability to retain light; an effect known as phosphorescence, which gives the gem the power to glow in the dark. This luminous effect is due to slowly releasing absorbed energy in the form of light.