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Alexandrite

Tsarstone collectors guide

Certified Natural Alexandrite Oval 4.81cts.

The stone is well cut with good transparency and a strong and attractive color change offering excellent value for an alexandrite this size.

Certified Natural Alexandrite Oval 4.81cts.
Natural Alexandrite Oval 4.81 cts Natural Alexandrite Oval 4.81 cts

Grade Score 7 / 10

Color
Very good (4/5)
Cut
Fair (2/5)
Carat
Large (4/5)
Clarity
Good (3/5)
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: yG*5/2 (medium yellowish green)
Phenomena: Change of color (Alexandrite effect) Pleochroism Strong
Color phenomena: RO/OR*3/3 (light red-orange or orange red [pink])
Clarity
Clarity type: Moderately included (Type I)
Transparency: Transparent
Cut
Shape: Oval
Cut style: Step
Symmetry: Good
Brilliance: Good
Polish: Exceptional
Size
Width: 8.40 mm
Length: 12.20 mm
Depth: 5.50 mm
Weight: 4.81 cts
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Bibliographic details
Page title Natural Alexandrite Oval 4.81 cts
Author David Weinberg
Website title Alexandrite Tsarstone Collectors Guide
Date published 03 July 2010 05:06 UTC
Date accessed 10 November 2025 22:45 UTC
Permanent link http://www.alexandrite.net/viewpage.html?id=ALX-001-00007
AMA style
David Weinberg. "Natural Alexandrite Oval 4.81 cts". In Alexandrite Tsarstone Collectors Guide. July 03, 2010, 05:06 UTC. Available at: http://www.alexandrite.net/viewpage.html?id=ALX-001-00007. Accessed November 10, 2025.
APA style
"Natural Alexandrite Oval 4.81 cts". (2010, July 03). In Alexandrite Tsarstone Collectors Guide. Retrieved 22:45, November 10, 2025, from http://www.alexandrite.net/viewpage.html?id=ALX-001-00007.
Bluebook style
"Natural Alexandrite Oval 4.81 cts", http://www.alexandrite.net/viewpage.html?id=ALX-001-00007 (last visited November 10, 2025).
Bluebook: Harvard JOLT style
See Alexandrite Tsarstone Collectors Guide, "Natural Alexandrite Oval 4.81 cts", http://www.alexandrite.net/viewpage.html?id=ALX-001-00007 (Extremely rare Alexandrite (Chrysoberyl) Oval 4.81cts from Tanzania (Tunduru)) (as of Nov. 10, 2025, 22:45 GMT).
CBE/CSE style
David Weinberg. "Natural Alexandrite Oval 4.81 cts". In Alexandrite Tsarstone Collectors Guide. 2010 Jul 03, 05:06 UTC.[Internet], Alexandrite Tsarstone Collectors Guide; 2010 Jul 03, 05:06 UTC [cited 2025 Nov 10]. Available from: http://www.alexandrite.net/viewpage.html?id=ALX-001-00007.
Chicago style
David Weinberg, "Natural Alexandrite Oval 4.81 cts", http://www.alexandrite.net/viewpage.html?id=ALX-001-00007, (accessed November 10, 2025).
MLA style
"Natural Alexandrite Oval 4.81 cts". Alexandrite Tsarstone Collectors Guide. 03 Jul 2010, 05:06 UTC. 10 Nov 2025 http://www.alexandrite.net/viewpage.html?id=ALX-001-00007
MHRA style
David Weinberg, "Natural Alexandrite Oval 4.81 cts", Alexandrite Tsarstone Collectors Guide, 03 July 2010, 05:06 UTC, http://www.alexandrite.net/viewpage.html?id=ALX-001-00007 [accessed 10 November 2025].
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