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English: Sodalite
Locality: Afghanistan (Locality at mindat.org)
Size: thumbnail, 9.3 x 7.6 mm ; 1.88 carats
Sodalite (var
Since this new find of Sodalite hit the market a few years ago, I have been quite impressed with the amount of relatively clean stones out there. Sodalite is a very durable stone and that's why it is so popular among dealers and collectors alike. The gem variety of Sodalite is Hackmanite and it is tenebrescent which is the process by which a mineral changes daylight color after being exposed to SW Light. This stone is very tenebrescent and also shows a good LW/SW Fluorescence. The stone fluoresces orange under LW and light orange under SW. The Hackmanite will turn a slight lavender color after being exposed to prolonged SW light and then will return to normal color. This process is 100% repeatable and in no way hurts the stone. This gem is nearly colorless, but it's definitely a larger stone and one of the better quality gems in this size range that I've seen. The stone is only very slightly included, which is very difficult to find in this material, and make no mistake, this is a significant collectors gem. This material is retailing for HIGH numbers now across the board, and I recently saw some stones in Munich that were priced at $400 per carat.
Deutsch: Sodalith
Fundort: Afghanistan (Fundort bei mindat.org)
Größe: 9.3 x 7.6 mm ; 1.88 carats
Date before March 2010(2010-03)
Source Image: http://www.irocks.com/db_pics/new09/Hackmanite188ct.JPG, Description: http://www.irocks.com/render.html?species=Sodalite&page=0


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Exposure time 10/10 sec (1)
F number f / 16
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Exif version 0221
Lens focal length 60 mm
Date and time original image was generated 2009:11:23 17:52:32
Date and time image was made digital data 2009:11:23 17:52:32
Meaning of each component 
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Maximum lens aperture 3.7
Metering mode 2
User comments ASCII
Supported Flashpix version 0100
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Exif image width 349
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Exposure mode 1
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Focal length in 35 mm film 90 mm
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Software used Adobe Photoshop 7.0

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