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Alexandrite

Tsarstone collectors guide

Strong Change Natural Alexandrite 7.24cts.

Dark violet-green in daylight and red under incandescent light, the color change is strong. The stone is exceptionally clean and well cut. Alexandrites this large and this clean are very rare.

Strong Change Natural Alexandrite 7.24cts.
Natural Alexandrite Pear 7.24 cts Natural Alexandrite Pear 7.24 cts

Grade Score 9 / 10

Color
Good (3/5)
Cut
Exceptional (5/5)
Carat
Very large (5/5)
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: Tunduru, Ruvuma, Ruvuma Region, Tanzania
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 8/3 (very dark very strongly bluish green)
Phenomena: Pleochroism Change of color (Alexandrite effect) Strong
Color phenomena: slp/R*6/4 (medium dark slightly purplish red)
Clarity
Clarity type: Eye clean (Type I)
Transparency: Transparent
Cut
Shape: Pear
Cut style: Step
Symmetry: Exceptional
Brilliance: Exceptional
Polish: Exceptional
Size
Width: 9.70 mm
Length: 13.40 mm
Depth: 8.30 mm
Weight: 7.24 cts
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Bibliographic details
Page title Natural Alexandrite Pear 7.24 cts
Author David Weinberg
Website title Alexandrite Tsarstone Collectors Guide
Date published 03 July 2010 05:06 UTC
Date accessed 26 September 2023 01:21 UTC
Permanent link http://www.alexandrite.net/viewpage.html?id=ALX-001-00010
AMA style
David Weinberg. "Natural Alexandrite Pear 7.24 cts". In Alexandrite Tsarstone Collectors Guide. July 03, 2010, 05:06 UTC. Available at: http://www.alexandrite.net/viewpage.html?id=ALX-001-00010. Accessed September 26, 2023.
APA style
"Natural Alexandrite Pear 7.24 cts". (2010, July 03). In Alexandrite Tsarstone Collectors Guide. Retrieved 01:21, September 26, 2023, from http://www.alexandrite.net/viewpage.html?id=ALX-001-00010.
Bluebook style
"Natural Alexandrite Pear 7.24 cts", http://www.alexandrite.net/viewpage.html?id=ALX-001-00010 (last visited September 26, 2023).
Bluebook: Harvard JOLT style
See Alexandrite Tsarstone Collectors Guide, "Natural Alexandrite Pear 7.24 cts", http://www.alexandrite.net/viewpage.html?id=ALX-001-00010 (Extremely rare Alexandrite (Chrysoberyl) Pear 7.24cts from Tanzania (Tunduru)) (as of Sep. 26, 2023, 01:21 GMT).
CBE/CSE style
David Weinberg. "Natural Alexandrite Pear 7.24 cts". In Alexandrite Tsarstone Collectors Guide. 2010 Jul 03, 05:06 UTC.[Internet], Alexandrite Tsarstone Collectors Guide; 2010 Jul 03, 05:06 UTC [cited 2023 Sep 26]. Available from: http://www.alexandrite.net/viewpage.html?id=ALX-001-00010.
Chicago style
David Weinberg, "Natural Alexandrite Pear 7.24 cts", http://www.alexandrite.net/viewpage.html?id=ALX-001-00010, (accessed September 26, 2023).
MLA style
"Natural Alexandrite Pear 7.24 cts". Alexandrite Tsarstone Collectors Guide. 03 Jul 2010, 05:06 UTC. 26 Sep 2023 http://www.alexandrite.net/viewpage.html?id=ALX-001-00010
MHRA style
David Weinberg, "Natural Alexandrite Pear 7.24 cts", Alexandrite Tsarstone Collectors Guide, 03 July 2010, 05:06 UTC, http://www.alexandrite.net/viewpage.html?id=ALX-001-00010 [accessed 26 September 2023].
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