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  • Home
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    • Gemology Lectures
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Lectures

Downtown: Hunting gems in Southern Tanzania

From Madagascar to Tajikistan

Richard W. Hughes
Lecture Date: 1 February 2007

Richard Hughes details his visits to ruby and sapphire mines in Madagascar and Tajikistan.

Downtown: Hunting gems in Southern Tanzania

Gem Hunting in Central Asia

Richard W. Hughes
Lecture Date: 7 December 2006

A 2006 mission to remote ruby and spinel localities in Tajikistan, and the famous Russian emerald and alexandrite deposits at Malysheva.

From Madagascar to Malysheva: In Search of Precious Stones

From Madagascar to Malysheva

Richard W. Hughes
Lecture Date: 28 October 2006

A 2005 mission to ruby and sapphire localities in Madagascar, and a 2006 visit to the famous Russian Ural Mountain emerald and alexandrite deposits at Malysheva.

Discussion of a 2005 visit to sapphire localities in Madagascar.

Madagascar Sapphire

Richard W. Hughes
Lecture Date: 29 April 2006

Discussion of a 2005 visit to sapphire localities in Madagascar.

Discussion of emerald enhancements, along with a 2005 mission to ruby and sapphire localities in Madagascar.

Enhanced Emeralds/Madagascar Sapphire

E. Billie Hughes
Lecture Date: 10 January 2006

Discussion of emerald enhancements, along with a 2005 mission to ruby and sapphire localities in Madagascar.

Discussion of emerald enhancements, along with a 2005 mission to ruby and sapphire localities in Madagascar.

Enhanced Emeralds/Madagascar Sapphire

Richard W. Hughes
Lecture Date: 10 November 2005

Discussion of emerald enhancements, along with a 2005 mission to ruby and sapphire localities in Madagascar.

Discussion of emerald enhancements, along with a 2005 mission to ruby and sapphire localities in Madagascar.

Enhanced Emeralds/Madagascar Sapphire

Richard W. Hughes
Lecture Date: 29 August 2005

Discussion of emerald enhancements, along with a 2005 mission to ruby and sapphire localities in Madagascar.

Gems & Gemology Lectures from Lotus Gemology

Gems & Gemology Lectures

E. Billie Hughes

Lotus Gemology's gemologists have lectured extensively about a wide variety of gemological topics including ruby, sapphire, jade, and more.

Downtown: Hunting gems in Southern Tanzania

Lecture | Hunting gems in Southern Tanzania | Bangkok | 9 March 2009

Richard W. Hughes

Since the late 1960's, East Africa has been home to some of planet earth's greatest gem discoveries. And yet, little has been written about certain of these finds. In the autumn of 2007, Richard Hughes and friends set out to fill in the gaps, specifically regarding Tanzania's Mahenge, Songea and Tunduru regions.

People & Places: New Directions in East African Gemology

Lecture | People & Places | Bangkok | 9 July 2008

E. Billie Hughes

A survey of the gem mines of Tanzania, including Merelani, Songea and Tunduru, based on Richard Hughes' 2007 trip.

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