A Red Beryl Necklace .. Beryl is the mineral classification in which emeralds belong .. other colors of beryl are also used as gemstones, including red beryl, sometimes referred to as red emerald .. gem-quality red beryl can only be found in the mountains of Utah and is more valuable than gold .. in rough form, red beryl is found as hexagonal crystals ranging in color from red-orange to red-purple or raspberry-red..