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Alexandrite

Tsarstone collectors guide


Gemstone

Gemstone
Any rough mineral or other material natural or synthetic, which possesses the necessary attractiveness, brilliance, beauty, rarity, color dispersion, refraction, color or colorless, flawless, portability, fashionably, and durability for use in gem industry. For identification gems are superficially examined by color, optic qualities, sight, and coolness, but require some scientific examination such as determination of specific gravity, hardness, refractive index, crystal system (when crystallized), dichroism, absorption spectra, etc. All minerals, as well as the opal are gemstones, but all type of glass and plastics are excluded.
Bibliographic details
Page title Definition of Gemstone
Author David Weinberg
Website title Alexandrite Tsarstone Collectors Guide
Date published 03 July 2010 04:49 UTC
Date accessed 06 April 2026 15:26 UTC
Permanent link http://w.alexandrite.com/viewpage.html?id=GG-092-00002
AMA style
David Weinberg. "Definition of Gemstone". In Alexandrite Tsarstone Collectors Guide. July 03, 2010, 04:49 UTC. Available at: http://w.alexandrite.com/viewpage.html?id=GG-092-00002. Accessed April 06, 2026.
APA style
"Definition of Gemstone". (2010, July 03). In Alexandrite Tsarstone Collectors Guide. Retrieved 15:26, April 06, 2026, from http://w.alexandrite.com/viewpage.html?id=GG-092-00002.
Bluebook style
"Definition of Gemstone", http://w.alexandrite.com/viewpage.html?id=GG-092-00002 (last visited April 06, 2026).
Bluebook: Harvard JOLT style
See Alexandrite Tsarstone Collectors Guide, "Definition of Gemstone", http://w.alexandrite.com/viewpage.html?id=GG-092-00002 (Any rough mineral or other material natural or synthetic, which possesses the necessary attractiveness, brilliance, beauty, rarity, color dispersion, refraction, color or colorless, flawless, portability, fashionably, and durability for use in gem industry. For identification gems are superficially examined by color, optic qualities, sight, and coolness, but require some scientific examination such as determination of specific gravity, hardness, refractive index, crystal system (when crystallized), dichroism, absorption spectra, etc. All minerals, as well as the opal are gemstones, but all type of glass and plastics are excluded.) (as of Apr. 06, 2026, 15:26 GMT).
CBE/CSE style
David Weinberg. "Definition of Gemstone". In Alexandrite Tsarstone Collectors Guide. 2010 Jul 03, 04:49 UTC.[Internet], Alexandrite Tsarstone Collectors Guide; 2010 Jul 03, 04:49 UTC [cited 2026 Apr 06]. Available from: http://w.alexandrite.com/viewpage.html?id=GG-092-00002.
Chicago style
David Weinberg, "Definition of Gemstone", http://w.alexandrite.com/viewpage.html?id=GG-092-00002, (accessed April 06, 2026).
MLA style
"Definition of Gemstone". Alexandrite Tsarstone Collectors Guide. 03 Jul 2010, 04:49 UTC. 06 Apr 2026 http://w.alexandrite.com/viewpage.html?id=GG-092-00002
MHRA style
David Weinberg, "Definition of Gemstone", Alexandrite Tsarstone Collectors Guide, 03 July 2010, 04:49 UTC, http://w.alexandrite.com/viewpage.html?id=GG-092-00002 [accessed 06 April 2026].
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