Beryl

Beryl is the name for a family of minerals that includes some of the most recognizable gemstones: emerald, aquamarine, heliodore, golden beryl, morganite and goshenite. Beryl is a fairly common mineral that forms in granites and granitic pegmatites.

Emerald: Colored by chromium (Cr), emeralds are a deep green and highly valued as a gemstone.
Aquamarine: Colored by iron (Fe) aquamarines range in color from a light blue to a deep blue-green. The name aquamarine comes from the deep sea-green of the best crystals.
Heliodore: Also colored by iron (Fe), heliodores are a greenish-yellow color.
Golden Beryl: Golden beryls are a bright golden-yellow as opposed to heliodores more greenish coloring
Morganite: Morganites are colored by manganese (Mn) and is named for the early 20th century financier, J. P. Morgan.
Goshenite: Goshenite is the colorless form of beryl and is usually found alongside the colored beryls although it is not nearly as popular.

Chemical Formula:	Be₃Al₂(Si₆O₁₈)
Mineral Class:	Cyclosilicate
Crystal System:	Hexagonal
Symmetry:	6/m 2/m 2/m
Hardness:	7.5-8
Specific Gravity:	2.65-2.8
Cleavage:	{0001} imperfect
Fracture:	Conchoidal
Color:	Blue, green, yellow, pink, colorless, golden
Streak:	White
Luster:	Vitreous
Transparency:	Transparent/translucent
Common Habits:	Prismatic, columnar
Other Properties:
Notable Localities:	Columbia, Brazil, Ural Mountains, North Carolina, California
Uses:	As a gemstone, ore of beryllium
Associated Minerals:	Albite, orthoclase, topaz, elbaite tourmaline, quartz

Specimens:

Aquamarine Beryl Minas Gerais, Brazil	Aquamarine Beryl Nagar, Pakistan	Aquamarine Beryl Baltistan, Pakistan	Aquamarine Beryl Boise County, Idaho
Aquamarine Beryl Minas Gerais, Brazil	Emerald Beryl Ural Mountains, Russia	Emerald Beryl Muzo, Columbia	Emerald Beryl Stony Point, NC
Heliodore Beryl Wolhunia, Ukraine	Morganite Beryl Northern Areas, Pakistan