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Beryl

Big Photo

Emerald
Colombia
37.8 carats
© R. Simonoff

The name beryl comes from India and has always been associated with the gemstone. Several color varieties of beryl are used as gemstones. Deep green beryls are called emerals, blue - aquamarine, colorless - goshenite, light yellow-green - heliodor, pink beryl is morganite.
54 photos

Beryl Gemstones by Colour

This table shows the variety of hues this gemstone can be found in. Click on a photo for more information.
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

Beryl Gemstones by Size

This table shows distribution of Beryl gemstone sizes that are listed on this site. This can give a good indication as to the general availability of this gemstone in different sizes.
Contributed photos
Lightest:0.26 cts
Heaviest:38.41 cts
Average:9.02 cts
Total photos:55
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Significant stones
Mogul Emerald218 cts
Hooker emerald75 cts
0.26ct to 4.08ct4.08ct to 7.89ct7.89ct to 11.71ct11.71ct to 15.52ct15.52ct to 19.34ct19.34ct to 23.15ct23.15ct to 26.97ct26.97ct to 30.78ct30.78ct to 34.60ct34.60ct to 38.41ct
General Information
Varieties/Types:
Aquamarine - Blue variety of beryl.
Blue Beryl (Maxixe) - Deep blue beryl.
Emerald - Deep green variety of a beryl.
Goshenite - Colorless variety of 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.
Chemical Formula
Be
 
3
Al
 
2
Si
 
6
O
 
18
Ulrich Henn and Claudio C. Milisenda, Gemmological Tables (2004)
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Significant stones
ImageNameWeightCountry of OriginCurrent Owner
Mogul Emerald217.80 ctsColombiaUnidentified Private Owner
Hooker emerald75.47 ctsColombia
Chalk Emerald37.80 ctsColombiaSmithsonian Institution
Duke of Devonshire EmeraldColombiaChatsworth House
The Rose of MaineUSA
Physical Properties of Beryl
Mohs Hardness7.5 to 8
Herve Nicolas Lazzarelli, Blue Chart Gem Identification (2010)
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Specific Gravity2.68 to 2.78
Ulrich Henn and Claudio C. Milisenda, Gemmological Tables (2004)
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Cleavage QualityIndistinct
Arthur Thomas, Gemstones (2009)
FractureConchoidal
Arthur Thomas, Gemstones (2009)
Refractive Index1.562 to 1.615
Ulrich Henn and Claudio C. Milisenda, Gemmological Tables (2004)
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Optical CharacterUniaxial/-
Herve Nicolas Lazzarelli, Blue Chart Gem Identification (2010)
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Birefringence0.004 to 0.017
Ulrich Henn and Claudio C. Milisenda, Gemmological Tables (2004)
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PleochroismRed beryl - distinct: (orangy)-red - purplish-red; Golden beryl - weak: yellowish - greenish-yellow; Green beryl - distinct: yellow-green - blue-green
Herve Nicolas Lazzarelli, Blue Chart Gem Identification (2010)
More from other references
Dispersion