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Alexandrite

Tsarstone collectors guide

Stunning Chrysoberyl Trillion 13.75cts.

For such a hard and durable material chrysoberyl is relatively obscure and the low prices don’t seem to reflect its utility as a gemstone. Only corundum and diamond are harder.

Stunning Chrysoberyl Trillion 13.75cts.

Grade Score 8 / 10

Color
Good (3/5)
Cut
Exceptional (5/5)
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: Chrysoberyl
Origin: Horana, Kalutara, Western, Sri Lanka
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/GY 4/3 (medium light yellow-green)
Phenomena: Pleochroism Strong (65%-69%)
Clarity
Clarity type: Eye clean (Type I)
Transparency: Transparent
Cut
Shape: Trillion
Cut style: Portuguese
Symmetry: Exceptional
Brilliance: Exceptional
Polish: Exceptional
Size
Width: 13.00 mm
Length: 16.50 mm
Depth: 9.50 mm
Weight: 13.75 cts
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Bibliographic details
Page title Natural Chrysoberyl Trillion 13.75 cts
Author David Weinberg
Website title Alexandrite Tsarstone Collectors Guide
Date published 03 July 2010 05:08 UTC
Date accessed 01 June 2026 04:45 UTC
Permanent link http://m.alexandrite.net/viewpage.html?id=ALX-001-00033
AMA style
David Weinberg. "Natural Chrysoberyl Trillion 13.75 cts". In Alexandrite Tsarstone Collectors Guide. July 03, 2010, 05:08 UTC. Available at: http://m.alexandrite.net/viewpage.html?id=ALX-001-00033. Accessed June 01, 2026.
APA style
"Natural Chrysoberyl Trillion 13.75 cts". (2010, July 03). In Alexandrite Tsarstone Collectors Guide. Retrieved 04:45, June 01, 2026, from http://m.alexandrite.net/viewpage.html?id=ALX-001-00033.
Bluebook style
"Natural Chrysoberyl Trillion 13.75 cts", http://m.alexandrite.net/viewpage.html?id=ALX-001-00033 (last visited June 01, 2026).
Bluebook: Harvard JOLT style
See Alexandrite Tsarstone Collectors Guide, "Natural Chrysoberyl Trillion 13.75 cts", http://m.alexandrite.net/viewpage.html?id=ALX-001-00033 (Extremely rare Chrysoberyl (Chrysoberyl) Trillion 13.75cts from Sri Lanka (Horana)) (as of Jun. 01, 2026, 04:45 GMT).
CBE/CSE style
David Weinberg. "Natural Chrysoberyl Trillion 13.75 cts". In Alexandrite Tsarstone Collectors Guide. 2010 Jul 03, 05:08 UTC.[Internet], Alexandrite Tsarstone Collectors Guide; 2010 Jul 03, 05:08 UTC [cited 2026 Jun 01]. Available from: http://m.alexandrite.net/viewpage.html?id=ALX-001-00033.
Chicago style
David Weinberg, "Natural Chrysoberyl Trillion 13.75 cts", http://m.alexandrite.net/viewpage.html?id=ALX-001-00033, (accessed June 01, 2026).
MLA style
"Natural Chrysoberyl Trillion 13.75 cts". Alexandrite Tsarstone Collectors Guide. 03 Jul 2010, 05:08 UTC. 01 Jun 2026 http://m.alexandrite.net/viewpage.html?id=ALX-001-00033
MHRA style
David Weinberg, "Natural Chrysoberyl Trillion 13.75 cts", Alexandrite Tsarstone Collectors Guide, 03 July 2010, 05:08 UTC, http://m.alexandrite.net/viewpage.html?id=ALX-001-00033 [accessed 01 June 2026].
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