Morganite’s color range includes pink, rose, peach, and salmon. The pink and rose tints are the most fashionable, where as peach and salmon hues are less popular. Some collectors however, value untreated peach-colored stones more highly than the heat-treated pink stones.
Morganite is almost always heat-treated, it improve's the pink color. The treatment is not detectable. Heat drives off the yellow or orange tinge, leaving a purer and more attractive pink. The resulting color is stable and won’t fade.