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Chrysoberyl var. Alexandrite

Chrysoberyl var. Alexandrite

Specimen # 101429
Mineral: Chrysoberyl var. Alexandrite
Location: Carnaíba District, Pindobaçu, Bahia, Brazil
Size: 3.7 x 3.1 x 2.2 cm
Price: $125.00 CAD

Quantity:

Detailed Description

This specimen is really different - most Carnaiba alexandrites are rather flat, but the main cyclic twin here is quite blocky (2.5 cm x 1.3 cm). This main crystal is sharp and has some good lustre. In excellent condition for its size, the right hand  corner (first photo, or, in second photo, oriented at bottom) is chipped, as are a couple of smaller crystals on the piece. The crystals are quite dark, almost black in appearance and need strong light to discern the colour and colour change - they are a dark green hue in sunlight or LED illumination and dark reddish-purplish black hue under incandescent/halogen. This is a good-sized alexandrite.

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About these Alexandrite Specimens

Specimens of chrysoberyl var. alexandrite have been known from the mines of the Carnaiba district since the early 1980s, and have been found intermittently since that time. The crystals are usually very dark - it is often a challenge to spot the  colour, even with strong light right against the crystals themselves. Carnaiba alexandtrites are remarkable for their sharpness, and in particular for their excellent cyclic twinning.

Detailed Description

This specimen is really different - most Carnaiba alexandrites are rather flat, but the main cyclic twin here is quite blocky (2.5 cm x 1.3 cm). This main crystal is sharp and has some good lustre. In excellent condition for its size, the right hand  corner (first photo, or, in second photo, oriented at bottom) is chipped, as are a couple of smaller crystals on the piece. The crystals are quite dark, almost black in appearance and need strong light to discern the colour and colour change - they are a dark green hue in sunlight or LED illumination and dark reddish-purplish black hue under incandescent/halogen. This is a good-sized alexandrite.

Browse More Specimens From Brazil (click here)


 

About these Alexandrite Specimens

Specimens of chrysoberyl var. alexandrite have been known from the mines of the Carnaiba district since the early 1980s, and have been found intermittently since that time. The crystals are usually very dark - it is often a challenge to spot the  colour, even with strong light right against the crystals themselves. Carnaiba alexandtrites are remarkable for their sharpness, and in particular for their excellent cyclic twinning.