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Alexandrite

Tsarstone collectors guide

Quality Natural Alexandrite Cushion 2.70cts.

In daylight the color is dark very strongly bluish green and under incandescent light medium dark very slightly grayish red-purple. The color change is moderately strong the cutting is good and the stone is exceptionally clean.

Quality Natural Alexandrite Cushion 2.70cts.
Natural Alexandrite Cushion 2.7 cts Natural Alexandrite Cushion 2.7 cts

Grade Score 7 / 10

Color
Fair (2/5)
Cut
Good (3/5)
Carat
Large (4/5)
Clarity
Exceptional (5/5)
Rarity
Extremely rare (5/5)

Price information

Availability information

Detail identification and grading report
Identification
Type: Natural
Species: Chrysoberyl
Variety: Alexandrite
Origin: Deobhog area, Raipur, Chhattisgarh, India
Hardness: 8.5
Density: 3.75
RI-1: 1.741
RI-2: 1.76
Enhancements
Variety of work: Faceted
Designation: A (Not currently known to be enhanced)
Color
Color light source: Cool daylight
Color description: vstbG 5/3vstbG 5/3 (medium very strongly bluish green)
Phenomena: Change of color (Alexandrite effect) Pleochroism Strong
Color phenomena: rP*5/2 (medium reddish purple)
Clarity
Clarity type: Eye clean (Type I)
Transparency: Transparent
Cut
Shape: Cushion
Cut style: Step
Symmetry: Good
Brilliance: Exceptional
Polish: Exceptional
Size
Width: 6.38 mm
Length: 8.81 mm
Depth: 5.29 mm
Weight: 2.70 cts
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Bibliographic details
Page title Natural Alexandrite Cushion 2.7 cts
Author David Weinberg
Website title Alexandrite Tsarstone Collectors Guide
Date published 03 July 2010 06:06 UTC
Date accessed 21 April 2014 09:28 UTC
Permanent link http://www.alexandrite.net/viewpage.html?id=ALX-001-00024
AMA style
David Weinberg. "Natural Alexandrite Cushion 2.7 cts". In Alexandrite Tsarstone Collectors Guide. July 03, 2010, 06:06 UTC. Available at: http://www.alexandrite.net/viewpage.html?id=ALX-001-00024. Accessed April 21, 2014.
APA style
"Natural Alexandrite Cushion 2.7 cts". (2010, July 03). In Alexandrite Tsarstone Collectors Guide. Retrieved 09:28, April 21, 2014, from http://www.alexandrite.net/viewpage.html?id=ALX-001-00024.
Bluebook style
"Natural Alexandrite Cushion 2.7 cts", http://www.alexandrite.net/viewpage.html?id=ALX-001-00024 (last visited April 21, 2014).
Bluebook: Harvard JOLT style
See Alexandrite Tsarstone Collectors Guide, "Natural Alexandrite Cushion 2.7 cts", http://www.alexandrite.net/viewpage.html?id=ALX-001-00024 (Extremely rare Alexandrite (Chrysoberyl) Cushion 2.7cts from India (Deobhog area)) (as of Apr. 21, 2014, 09:28 GMT).
CBE/CSE style
David Weinberg. "Natural Alexandrite Cushion 2.7 cts". In Alexandrite Tsarstone Collectors Guide. 2010 Jul 03, 06:06 UTC.[Internet], Alexandrite Tsarstone Collectors Guide; 2010 Jul 03, 06:06 UTC [cited 2014 Apr 21]. Available from: http://www.alexandrite.net/viewpage.html?id=ALX-001-00024.
Chicago style
David Weinberg, "Natural Alexandrite Cushion 2.7 cts", http://www.alexandrite.net/viewpage.html?id=ALX-001-00024, (accessed April 21, 2014).
MLA style
"Natural Alexandrite Cushion 2.7 cts". Alexandrite Tsarstone Collectors Guide. 03 Jul 2010, 06:06 UTC. 21 Apr 2014 http://www.alexandrite.net/viewpage.html?id=ALX-001-00024
MHRA style
David Weinberg, "Natural Alexandrite Cushion 2.7 cts", Alexandrite Tsarstone Collectors Guide, 03 July 2010, 06:06 UTC, http://www.alexandrite.net/viewpage.html?id=ALX-001-00024 [accessed 21 April 2014].
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