Chrysoberyl

  

Origin: Lac Alaotra, Madagascar

Sample size: left twinned crystal 2 x 2 cm x 4 mm, right twinned crystal 2 x2 x 4 mm

 

    

Origin: Rock Ridge mine, Black Hills area, Custer Co., South Dakota, USA

Sample size: top 6 x 5 x 5 cm, crystal to 3 cm, bottom 8 x 6 x 5 cm, crystals to 2 cm

 

  

Origin: Rio das Pratinhas, Arataca, Bahia, Brazil

Sample size: 3.5 x 3 x 2 cm

 

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Twinned (sixling) chrysoberyl

Origin: Itaguacu, Espirito Santo, Brazil

Sample size: 2.5 x 2.3 x 1.7 cm

 

  

Variety alexandrite

Origin: Espirito Santo, Minas Gerais, Brazil

Ex. M. Dodge collection

Sample size: 2.1 x 1.9 x 0.6 cm

 

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Variety alexandrite

Origin: Caraiba, Pindobacu, Brazil

Sample size: 1.5 x 1 x 0.3 cm (top), 3.5 x 3.2 x 2.2 cm (2nd row), 1.1 x 1.1 x 0.2 cm (3rd row), 3 x 2.3 x 1 cm (4th row), 3 x 2.3 x 1.3 cm (5th/6th row), 2.4 x 0.3 cm (7th row), 3.5 x 1.5 x 1.5 cm (bottom)

 

  

Var. alexandrite

Origin: Lake Manyara, Tanzania

Sample size: 9 x 8 x 5 mm

 

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