Switch to preferred accessibility theme:

• High contrast
• Low graphics
• Mobile version
• Default theme

Increase or decrease the text size:

• Internet Explorer: View > Text Size > Largest

Keyboard navigation and access keys:

• A - Accessibility options
• 0 - Skip navigation
• 1 - Home
• 2 - Alexandrite chapters
• 3 - Alexandrite directory
• 4 - Alexandrite forums
• 5 - Alexandrite gemstones
• 6 - Alexandrite localities
• 7 - Contact information
• 8 - About Alexandrite Guide
• 9 - Sitemap
• Press ALT + Access Key, then ENTER.

This section has no relevant content published at this time.

AMA style

David Weinberg. "Definition of Eyepiece". In Alexandrite Tsarstone Collectors Guide. July 03, 2010, 04:49 UTC. Available at: http://w.alexandrite.com/viewpage.html?id=GG-090-00005. Accessed June 04, 2026.

APA style

"Definition of Eyepiece". (2010, July 03). In Alexandrite Tsarstone Collectors Guide. Retrieved 17:29, June 04, 2026, from http://w.alexandrite.com/viewpage.html?id=GG-090-00005.

Bluebook style

"Definition of Eyepiece", http://w.alexandrite.com/viewpage.html?id=GG-090-00005 (last visited June 04, 2026).

Bluebook: Harvard JOLT style

See Alexandrite Tsarstone Collectors Guide, "Definition of Eyepiece", http://w.alexandrite.com/viewpage.html?id=GG-090-00005 (Any lens or combination of lenses acting virtually as a magnifying lens in a microscope nearest the eye of the observer. Also called ocular, or ocular lens.) (as of Jun. 04, 2026, 17:29 GMT).

CBE/CSE style

David Weinberg. "Definition of Eyepiece". In Alexandrite Tsarstone Collectors Guide. 2010 Jul 03, 04:49 UTC.[Internet], Alexandrite Tsarstone Collectors Guide; 2010 Jul 03, 04:49 UTC [cited 2026 Jun 04]. Available from: http://w.alexandrite.com/viewpage.html?id=GG-090-00005.

Chicago style

David Weinberg, "Definition of Eyepiece", http://w.alexandrite.com/viewpage.html?id=GG-090-00005, (accessed June 04, 2026).

MLA style

"Definition of Eyepiece". Alexandrite Tsarstone Collectors Guide. 03 Jul 2010, 04:49 UTC. 04 Jun 2026 http://w.alexandrite.com/viewpage.html?id=GG-090-00005

MHRA style

David Weinberg, "Definition of Eyepiece", Alexandrite Tsarstone Collectors Guide, 03 July 2010, 04:49 UTC, http://w.alexandrite.com/viewpage.html?id=GG-090-00005 [accessed 04 June 2026].