Kunzite forms naturally as colorless, pink, lilac, yellow and green crystals. The yellow-green to emerald variety is known as Hiddenite, or Green Kunzite. (For its properties, see the Hiddenite page.) The colorless to light yellow variety is known as Triphane, or Spodumene. (See the Spodumene page.) Genuine Kunzite is quite pale in color, with natural darker shades being higher in value. There are some heat-enhanced varieties on the market. All Kunzite is prone to fading in direct sunlight.