As a beryl, morganite is transparent and has a vitreous luster. This stone is relatively free of inclusions, giving it a desirable clear appearance. Morganite is essentially colorless, but the presence of magnesium creates a pink effect while the presence of iron impurities gives a slight yellow or orange hue, combining for the iconic peachy color.
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People have probably used tourmaline as a gem for centuries, but until the development of modern mineralogy, they identified it as some other stone (ruby, sapphire, emerald, and so forth) based on its coloring.
Tourmaline comes in a variety of different colors. In fact, it has one of the widest color range of any gems species.
Birthstone for October and the gem for 8th anniversaries.