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Mineralpedia Details for Beryl

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Beryl

Beryl

Named for the Greek beryllos, now meaning “beryl,” but previously used in reference to antiquated blue-green stones which may or may not have been Beryl. Beryl is a common mineral that occurs in granite, granite pegmatites, nepheline syenite, mafic metamorphic rocks, hydrothermal veins, and in vugs in rhyolite. Thousands of localities but fine specimens come from localities in Russia, Ukraine, Mozambique, Madagascar, Nigeria, Zimbabwe, Colombia, Brazil, Pakistan, Afghanistan, and the United States. Minerals associated with Beryl include quartz, feldspar, muscovite, lepidolite, spodumene, amblygonite, tourmaline, topaz, cassiterite, columbite, and tantalite. Popular varieties of Beryl that are prized for gemstones are Emerald, Aquamarine, and Morganite.

Ref. Handbook of Mineralogy, Anthony et al (1995) and MSA at http://www.handbookofmineralogy.org/pdfs/beryl.pdf

Formula
Be3Al2Si6O18 
Crystal System
Hexagonal 
Crystal Habit
Crystalline - Coarse, Prismatic, Columnar 
Cleavage
Imperfect, None, None 
Luster
Vitreous - Resinous 
Color
green, blue, yellow, colorless, pink 
Streak
white 
Class
Hexagonal - Dihexagonal Dipyramidal 
Fracture
Brittle - Conchoidal 
Hardness
7.5-8 
WebMineral
View Beryl 
Mindat
View Beryl 

Beryl var. Aquamarine from Biansapi, Braldu Valley, Baltistan, Northern Areas, Pakistan

Beryl var. Aquamarine
            from Biansapi, Braldu Valley, Baltistan, Northern Areas, Pakistan

Aquamarine specimen with several gemmy parallel crystals all nicely terminated with a bit of Albite matrix at the base.

Click thumbnail images for larger view.

Beryl var. Aquamarine from Dassu, Braldu Valley, Balistan, Northern Areas, Pakistan

Beryl var. Aquamarine
            from Dassu, Braldu Valley, Balistan, Northern Areas, Pakistan

A small 3.3cm, light colored, gemmy crystal nested perfectly at the center of an Albite crystal with an attached Quartz crystal. There are several smaller crystals about matrix.

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Beryl var. Aquamarine from Kala, Darrah Pech, Kunar prov., Afghanistan

Beryl var. Aquamarine
            from Kala, Darrah Pech, Kunar prov., Afghanistan

Beryl and Columbite in combination with Albite. The two Aquamarines are both about 1.7cm and are perfectly gemmy with a simple pinacoidal termination. The Columbite is a crude, 1.5cm tabular crystal.

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Beryl var. Aquamarine from Shah Nassir Peak, Nyet, Braldu Valley, Baltistan, Northern Areas, Pakistan

Beryl var. Aquamarine
            from Shah Nassir Peak, Nyet, Braldu Valley, Baltistan, Northern Areas, Pakistan

An Aquamarine Beryl crystal to 6.5 cm along a plate of white Albite matrix. Associated with Schorl (black) Tourmaline.

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Beryl var. Aquamarine from Khargulu, near Sabsir, Gilgit-Skardu Road, Northern Areas, Pakistan

Beryl var. Aquamarine
            from Khargulu, near Sabsir, Gilgit-Skardu Road, Northern Areas, Pakistan

A 5cm gemmy, terminated Aquamarine crystal attached to a partial Quartz crystal with a bit of Schorl and Albite.

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Beryl var. Aquamarine from Chumar Bakhoor, Nagar, Northern Areas, Pakistan

Beryl var. Aquamarine
            from Chumar Bakhoor, Nagar, Northern Areas, Pakistan

Beryl and Muscovite. The large 4cm Aquamarine at the center is perfectly clear, gemmy and is nicely terminated with several beveled faces.

Crystallized Muscovite at the base and attached Quartz and a large 3x2cm fully terminated Aquamarine crytstal.

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Beryl var. Morganite from Khargulook, near Sabsar, Gilgit-Skardu Rd., Northern Areas, Pakistan

Beryl var. Morganite
            from Khargulook, near Sabsar, Gilgit-Skardu Rd., Northern Areas, Pakistan

Large pink Morganite Beryl with Albite, terminated at both ends. The crystal is 6cm long and 5cm across the terminated face. Unique to this piece is that the Morganite is actually a green Aquamarine at the center.

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Beryl var. Emerald from Khaash Mountain, Badakhshan, Afghanistan

Beryl var. Emerald
            from Khaash Mountain, Badakhshan, Afghanistan

Solid green, opaque, not gem quality, hexagonal crystals to 2cm in matrix.

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Beryl var. morganite from Dara-i-Pech., Kunar prov., Afghanistan

Beryl var. morganite
            from Dara-i-Pech., Kunar prov., Afghanistan

Gemmy light pink Beryl crystals variety morganite in Albite matrix. There are two tabular crystals, the largest is 4.5 x 3.5cm with frosted terminations and perfectly clear prism faces. Beryl does not usually form tabular crystals. This is a good example of morganite Beryl and would make a fine display specimen. Morganite is probably the rarest of Beryl varieties.

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Beryl var. aquamarine from Doi Ty mine, Thuong Xuan dist., Thanh Hoa prov., Vietnam

Beryl var. aquamarine
            from Doi Ty mine, Thuong Xuan dist., Thanh Hoa prov., Vietnam
Special Info
Gem Quality

A deep aquamarine , gemmy and terminated crystal.

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Beryl from Stow, Oxford Co., Maine, United States

Beryl
            from Stow, Oxford Co., Maine, United States

Two large Beryl aquamarines one measuring 5cm and the other 3.5cm. It is obviously repaired. It would have been impossible to have broken this specimen from the Quartz matrix without the Beryl coming loose.

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Beryl (red) from Wah Wah Mts, Beaver Co., Utah, United States

Beryl (red)
            from Wah Wah Mts, Beaver Co., Utah, United States

REd 3-4mm crystals showing many faces with good color.

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Beryl var. emerald from Kamar Safed, Bazarak dist., Panjsher prov., Afghanistan

Beryl var. emerald
            from Kamar Safed, Bazarak dist., Panjsher prov., Afghanistan

beryl, variety emerald prismatic crystals to1.5cm in the matrix.

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Beryl var. aquamarine from near Camp Lake, Elmore Co., Idaho, United States

Beryl var. aquamarine
            from near Camp Lake, Elmore Co., Idaho, United States

A very good thumbnail size terminated Beryl from the Chris van Laer collection.

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Beryl var. aquamarine from s. of Heart Lake, Elmore Co., Idaho, United States

Beryl var. aquamarine
            from s. of Heart Lake, Elmore Co., Idaho, United States
Special Info
Chris van Laer collection

Gemmy, etched, terminated Beryl aquamarine crystal with nice blue color.

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Beryl var. aquamarine from Sawtooth Range, Custer Co., Idaho, United States

Beryl var. aquamarine
            from Sawtooth Range, Custer Co., Idaho, United States

A fabulous, first class, thumbnail collected by Geary Murdock and purchased by Chris van Laer in 1984. The aquamarine is complexly terminated and is 1.2mm on Albite matrix. Excellent specimen showing a rich blue color.

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Beryl var. aquamarine from Nuristan prov., Afghanistan

Beryl var. aquamarine
            from Nuristan prov., Afghanistan

Light aquamarine, prismatic crystal to 3cm with complex termination.

A very nice group of five light green Beryl crystals the longest to 2.2cm. All terminated, a few smaller aside for the five largest.

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Beryl var. aquamarine from Ardeth Lake, Boise Co., Idaho, United States

Beryl var. aquamarine
            from Ardeth Lake, Boise Co., Idaho, United States

Dark blue naturally corroded Beryl crystal. 

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Beryl var. aquamarine from Upper Cramer Lake, Custer Co., Idaho, United States

Beryl var. aquamarine
            from Upper Cramer Lake, Custer Co., Idaho, United States

A single blue terminated crystal.

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