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Beryl is a colorless mineral that can acquire many hues as a result of chemical impurities. Each color variety has its own gem name. Blue and blue-green beryl is called aquamarine. Pink or peach material is known as morganite. Colorless beryl is called goshenite, and yellow to orange material is known as golden beryl. The most valuable, emerald, is a rich saturated green due to the presence of chromium and/or vanadium. These faceted gemstones include golden beryl, green beryl, morganite and aquamarine, ranging in size from 4.54 to 40.98 carats.