Morganite stones derive their value primarily from their color saturation and intensity, but size and clarity are also factors. Morganite stones are naturally pale or pastel in color, but how the stones are cut affects the color's presentation.
The most valuable stones are those that are clean with custom cuts in medium to light pink colors. However, the most common colors are peach and violet. Light and heat are used to accentuate the pink in the stone and get rid of the naturally occurring yellow color.
Unlike other gems, bigger morganites do not necessarily cost more because the stones are often found in larger crystals. This means that smaller stones, depending on the color, can cost significantly more than larger ones. Large gems that show good color are often too large to be used in jewelry.
There are collectors who are willing to pay a premium price for natural gems. The unheated aquamarine morganite is particularly popular with collectors and occurs greenish-blue in color.
Morganite stones occur in Brazil, Africa and the United States. In Madagascar, the gem is found as alluvial material. In the United States, the stone occurs primarily in San Diego County, California, and is of gem quality. Morganite jewelry generally does not require any special care.