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Session No. 218
Tuesday, 29 October 2013: 8:00 AM-12:00 PM
Room 205 (Colorado Convention Center)

T216. Gemological Research in the 21st Century: Characterizing Diamonds and other Gem Minerals

Gemological Institute of America; GSA Mineralogy, Geochemistry, Petrology, and Volcanology Division

 

James E. Shigley, Dona Dirlam, George R. Rossman, George E. Harlow, William B. Simmons and Frank Hawthorne, Advocates
Paper #
Start Time
 
8:00 AM
Introductory Remarks
1
8:05 AM
GEOCHEMICAL METHODS TO ADDRESS THE CHALLENGES FACING MODERN GEMOLOGICAL RESEARCH
ROSSMAN, George R., Division of Geological and Planetary Sciences, California Institute of Technology, Pasadena, CA 91125-2500, grr@gps.caltech.edu
2
8:25 AM
RECENT ADVANCES IN THE UNDERSTANDING OF THE DISTRIBUTION, ORIGIN, AGE, AND GEOLOGICAL OCCURRENCES OF DIAMONDS
SHIREY, Steven B., Department of Terrestrial Magnetism, Carnegie Institution of Washington, 5241 Broad Branch Road, NW, Washington, DC 20015 and SHIGLEY, James E., Research Department, Gemological Institute of America, 5345 Armada Drive, Carlsbad, CA 92008, sshirey@carnegiescience.edu
3
8:40 AM
COMPARISON OF LUMINESCENCE LIFETIMES FROM NATURAL AND LABORATORY IRRADIATED DIAMOND
MAGANA, Sally, Gemological Institute of America, Carlsbad, CA 92653, smagana@gia.edu
4
8:55 AM
IDENTIFICATION OF GREEN COLORED GEM DIAMONDS: AN ON-GOING CHALLENGE
BREEDING, Christopher M., Gemological Institute of America, 5345 Armada Drive, Carlsbad, CA 92008, christopher.breeding@gia.edu
5
9:10 AM
CHEMICAL CHARACTERIZATION OF GEM TOURMALINE
SIMMONS, William B., Earth and Environmental Science, Univ. of New Orleans, New Orleans, LA 70148, wsimmons@uno.edu
 
9:30 AM
Break
6
9:45 AM
CRYSTAL-FILLED CAVITIES IN GRANITIC PEGMATITES: BURSTING THE BUBBLE
LONDON, David, School of Geology and Geophysics, University of Oklahoma, 100 East Boyd Street, SEC 710, Norman, OK 73019-1009, dlondon@ou.edu
7
10:05 AM
TRACE ELEMENT COMPARISON OF ANCIENT ROMAN INTAGLIOS AND MODERN SAMPLES OF CHROMIAN CHALCEDONY; AN ARCHAEOGEMOLOGICAL PROVENANCE STUDY
LULE, Cigdem, 2640 Patriot Blvd, Suite 240, Glenview, IL 60026 and SHEN, Andy, GIA, 5345 Armada Dr, Carlsbad, CA 92008, clule@gemguide.com
8
10:20 AM
COUNTRY-OF-ORIGIN DETERMINATION OF MODERN GEM PERIDOTS FROM LA-ICPMS TRACE-ELEMENT CHEMISTRY AND LINEAR DISCRIMINANT ANALYSIS (LDA)
SHEN, Andy1, BLODGETT, Troy1 and SHIGLEY, James E.2, (1)GIA, 5345 Armada Dr, Carlsbad, CA 92008, (2)Research Department, Gemological Institute of America, 5345 Armada Drive, Carlsbad, CA 92008, ahshen1@live.com
9
10:35 AM
PRECISELY IDENTIFYING THE MINES FROM WHICH GEMSTONES WERE EXTRACTED: A CASE STUDY OF COLOMBIAN EMERALDS
MCMANUS, Catherine E., Materialytics, LLC, P.O. Box 10988, Killeen, TX 76547, MCMILLAN, Nancy J., Geological Sciences, New Mexico State University, Box 30001 MSC 3AB, Las Cruces, NM 88003 and DOWE, James, Materialytics, PO Box 10126, Killeen, TX 76547, c.mcmanus@materialytics.com
10
10:50 AM
SAPPHIRE - A CRYSTAL WITH MANY FACETS
STONE-SUNDBERG, Jennifer Leigh, 3138 SW Cascade Drive, Portland, OR 97205, jennifer@crystal-solutions.net
11
11:05 AM
GEM PARGASITE FROM MYANMAR: CRYSTAL STRUCTURE AND INFRARED SPECTROSCOPY
HEAVYSEGE, David, ABDU, Yassir A. and HAWTHORNE, Frank C., Geological Sciences, University of Manitoba, 125 Dysart Road, 240 Wallace Bldg, Winnipeg, MB R3T 2N2, Canada, frank_hawthorne@umanitoba.ca
12
11:20 AM
COMPARISON OF SURFACE MORPHOLOGY OF MONTANA ALLUVIAL SAPPHIRES BY SEM
BERG, Richard B., Montana Bureau of Mines and Geology, Montana Tech of the U. of Montana, 1300 W. Park St, Butte, MT 59701 and EQUALL, Nancy, Physics, ICAL, Montana State University, Bozeman, MT 59715, dberg@mtech.edu
13
11:35 AM
INVESTIGATION OF GEM MATERIALS USING 405NM LASER SPECTROSCOPY
BARWOOD, Henry L., Chemistry and Physics, Troy University, MSCX 312G, Troy, AL 36082, hbarwood@troycable.net
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