Beryllium

Beryl

The name Beryl comes from India and has always been associated with the gem. Beryl is praised for its transparency, high hardness and beautiful colors with a wide range of tones and shades. Beryl may have originated from the Greek "Beryllos" which in ancient times refer to a number of blue-green stones.

Data: 

Formula:  Be3Al2(Si6O18)
Color: colorless, white, yellow, green, blue, pink,
Coloring factors:

Dark blue (Maxixe and Maxixe type), CO3 (Maxixe type) and NO3 (Maxixe) color centers due to irradiation.

Light blue (aquamarine), Fe2 + in the channels of the structure.
Darker blue (aquamarine), Fe2 + -O-Fe3 + interval charge transfer. 
Green: yellow + blue, O2 → Fe2 + charge transfer and Fe2 + in the channels.
Green (emerald, mint beryl), Cr3 + and / or V3 + in octahedral coordination. 
Red, Mn3 + in octahedral coordination.
Pink (morganite), Mn2 + in octahedral coordination
Gloss: glass gloss, sub-glass gloss, wax gloss, greasy gloss
Hardness:  7½ - 8
Specific weight:  2.63 - 2.92
Crystal System:  Hexagonal
Transparency: Transparent, Translucent, Opaque                                    
Location:

Argentina, Brazil Portugal

 The Beryl Group has various colors: Green Beryl is also called Emerald, Blue Beryl is called Aquamarine. All other colored gems are called Edelberyl.

The Beryl Group has its own group with:

Aquamarine - Blue / green variety or beryl.

Blue Beryl (Maxixe) - Deep blue beryl.

Emerald - Deep green variety of a beryl.

Goshenite - Colorless variety or beryl.

Heliodor - Yellow variety of beryl.

Morganite - Pink variety of beryl.

Red Beryl - A red gem variety of beryl, also known as 'bixbite',

Riesling Beryl - A strongly dichroic (pale green / golden yellow) beryl.

Vorobyevite - A cesium-bearing variety of beryl.

Beryl has a Chrysoberyl subgroup with:

Alexandrite - A variety of Chrysoberyl which displays a color change.

Cymophane - Chrysoberyl Cat'e eye.

If in stock you will find below my collection of Raw Gemstones from this group.

Are you looking for cut stones from the Beryl Group, then look at BERYL GROUP