One of the most popular misconceptions about aquamarine is that its color should be just blue. Most consumers do prefer a dark blue aquamarine color. However, natural, untreated aquamarine is gemologically described as a transparent, blueish green variety of beryl. Let’s examine that “blueish green” color and how heat treatments affect it.
What is Natural Aquamarine Color?
Personally, I would describe an aquamarine’s color based on the stone’s body color and highlights. Those with blue body color and sea green highlights have “aquamarine color.” Those with green body color and blue highlights have “sea foam color.” Both these colors are gorgeous. I sell them quite well, mainly because many jewelers have never seen these colors and want something different and new. Some don’t even recognize the stones as aquamarines.
Although some aquamarine gemstones come out of the ground blue, almost all of them start life blueish green. Most of these are heat treated to blue, since this is the color the buying public prefers. Times and tastes do change, however. Natural color aquamarines are selling quite well. (I prefer them unheated, too).
Think Before You Heat Aquamarine
I strongly recommend that you leave aquamarine heat treatments to the experts. Although…