Annual Conference 2011
Dr. Karl Schmetzer
is an independent gemmology researcher and
consultant based in Petershausen, Germany. He specializes in the
mineralogy of gemstones, characterization of natural and synthetic gem
materials, description of new gemstones and gem localities, causes of
colour and colour changes produced through treatment, and
differentiation of natural gemstones from their synthetic counterparts.
Dr. Schmetzer has published numerous articles in the major gemmological
journals and is a member of the editorial board of the several
gemmological journals. He is a well known lecturer at international
gemmological conferences and he is the German delegate to the
International Gemmological Conference.
A gem of a
birthday present? – the history of the discovery of alexandrite
Dr Schmetzer will give an
historical overview of emerald mining in the Urals, the discovery and naming of
Russian alexandrite. The talk will offer an insight into mineralogy of 19th
century and working condition of scientists in imperial Russia and becomes –
almost – a criminal story of 19th century.
a special stone for experts, enthusiasts and connoisseurs
This talk will
cover the gemmological and mineralogical properties of alexandrite, its
inclusions, growth patterns and the results of recent research into the
determination of the extent of colour change. The possibility of determining the
locality of Russian and other alexandrites will also be discussed.
David entered the jewellery trade in 1955 as apprentice to Hancocks &
Company, where he was Director from 1964 until he retired in 1997.
in 1938 he attended St. Paul’s Cathedral Choir School, where he became
Head Chorister, then Magdalen College School, Oxford). He qualified as
an FGA in 1958. He is a Freeman of the City of London and was ‘clothed
with the Livery’ of the Goldsmiths’ Company in 1983. Former roles
include NAG Chairman (1976-78) and President (1999-2001); Chairman of
the Gemmological Association of Great Britain, now Gem-A (1979-93).
What a wonderful world?
of nature that we often take for granted – birds, animals, insects, reptiles,
fish, flowers, trees et al – have often been the inspiration for designers and
craftsmen alike particularly in jewellery. Profusely illustrated, many examples
of nature in jewellery are shown including some whimsical and curious creatures.
Hodgkinson - President of the Scottish Gemmological Association
Well-known international gemmologist and lecturer, Alan Hodgkinson,
has spent the last 50 years sharing his enthusiasm about gemstones with
others. His innovative and highly effective practical gem identification
techniques include ways to see and learn more using traditional gem
testing instruments. His new book, Gem Testing Techniques, is
about to be released.
Freeman of the Worshipful Company of Goldsmiths, Honorary Member of the
Canadian Gemmological Association and Registered Valuer, Alan was
honoured in 2000 as first recipient of the Antonio C. Bonanno Award for
Excellence in Gemology.
The measurement of specific gravity
is now curtailed from the practical exams for the FGA. The keen gemmologist
should not ignore this highly useful measurement, which is part of a gem's
identity. Ultimate levels of accuracy demand an expensive balance. The lecture
and workshop will look at the various portable options for assessing specific
gravity within acceptable limits of repeatable accuracy. Methods examined will
include: Pocket balance, Hanneman beam balance, heavy liquids and pycnometer.
Dominic Mok, MSc., FGA, DGA and
The founder and Principal of the
Asian Gemmological Institute & Laboratory Limited (AGIL), Hong Kong
first educational facility devoted exclusively to the study of
gemmology, has 34 years of experience in the jewellery trade and has
published several research articles. He uses advanced, high-tech
instruments in gem testing and annual jewellery audit appraisal
services. AGIL was the first gemmological laboratory in Hong Kong to be
accredited for Fei Cui Jadeite Jade testing.
Testing Precious Gemstones in Hong
This lecture will discuss a number
of interesting and beautiful gemstones which Dominic Mok has tested in the lab,
including a Jadeite necklace valued at HK$ 20 million; a blue diamond (4.5 cts)
valued at HK$6 million; a 13 ct D Internally Flawless Diamond valued at HK$15
millions - and many more pieces.
Workshop: Practical Jadeite (Fei Cui)
Testing, from eye to high-tech
Many specimens will be available to
illustrate the different varieties of Jadeite (Fei Cui).
Professor Marcia Pointon
Pointon is Professor Emeritus in History of Art at the University of
Manchester, and Hon. Research Fellow at the Courtauld Institute of Art.
Her interests as an art historian have ranged widely across landscape,
collecting and patronage, portraiture, and into the field of applied
arts and material culture. Her books include Hanging the Head:
Portraiture and Social Formation in Eighteenth-century England
(1993), Strategies for Showing: Women, Possession and Representation
in English Visual Culture 1665-1800 (1997) and Brilliant Effects:
a Cultural History of Gem Stones and Jewellery, published in 2009.
This major work, described as ‘fascinating’ and ‘a total delight’ by
Richard Edmonds (Birmingham Post 1.4.10), explores the wider
cultural meanings of the use, circulation and representation of gem
The Love of
Stones: Mineralogy, Art and Education in Nineteenth-century Britain
It is hard to
overestimate the extraordinary significance of the discoveries made by
geologists in the nineteenth century, or to ignore the findings of mineralogists
whether amateur collectors, or part of the scientific community. Marcia Pointon
will examine how these developments impacted upon the imaginative world of
artists. For men like William Dyce, John Brett, and John Ruskin, there had been
a major upheaval in the ways in which they viewed the world around them and –
through word and image – endeavoured to understand what they saw. Whether by
collecting and identifying mineral specimens, or by adopting a philosophically
questioning approach to rock formations, artists played their part in the great
debates about stones.
Robertson, G.G., is the Research Director for Gemworld International,
Inc., publishers of The Guide. He is an Accredited Senior Gemologist
with the Accredited Gemologists Association , has completed the
International Society of Appraisers Appraisal Principles Core
Courses, and is a member of the National Association of Jewelry
Appraisers. He is also on the Board of Governors for the Accredited
is also the winner of the 2011 Antonio C. Bonanno Award for Excellence
and other illusions from the trade
The talk will
examine current coloured stone trends in this less than robust economy. It will
also discuss how treatments of coloured stones influence supply and demand.
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