Session: Gemological Research in the 21st Century: Characterizing Diamonds and other Gem Minerals (2013 GSA Annual Meeting in Denver: 125th Anniversary of GSA (27-30 October 2013))

Introductory Remarks
Abstract ID#: 234286

GEOCHEMICAL METHODS TO ADDRESS THE CHALLENGES FACING MODERN GEMOLOGICAL RESEARCH
Abstract ID#: 231195

ROSSMAN, George R., Division of Geological and Planetary Sciences, California Institute of Technology, Pasadena, CA 91125-2500, grr@gps.caltech.edu

RECENT ADVANCES IN THE UNDERSTANDING OF THE DISTRIBUTION, ORIGIN, AGE, AND GEOLOGICAL OCCURRENCES OF DIAMONDS
Abstract ID#: 231261

SHIREY, Steven B., Department of Terrestrial Magnetism, Carnegie Institution of Washington, 5241 Broad Branch Road, NW, Washington, DC 20015, shirey@dtm.ciw.edu and SHIGLEY, James E., Research Department, Gemological Institute of America, 5345 Armada Drive, Carlsbad, CA 92008

COMPARISON OF LUMINESCENCE LIFETIMES FROM NATURAL AND LABORATORY IRRADIATED DIAMOND
Abstract ID#: 222516

MAGANA, Sally, Gemological Institute of America, Carlsbad, CA 92653, smagana@gia.edu

IDENTIFICATION OF GREEN COLORED GEM DIAMONDS: AN ON-GOING CHALLENGE
Abstract ID#: 220328

BREEDING, Christopher M., Gemological Institute of America (GIA), 5355 Armada Drive, Carlsbad, CA 92008, christopher.breeding@gia.edu

CHEMICAL CHARACTERIZATION OF GEM TOURMALINE
Abstract ID#: 224037

SIMMONS, William B., Earth and Environmental Science, Univ. of New Orleans, New Orleans, LA 70148, wsimmons@uno.edu

Break
Abstract ID#: 234287

CRYSTAL-FILLED CAVITIES IN GRANITIC PEGMATITES: BURSTING THE BUBBLE
Abstract ID#: 226879

LONDON, David, School of Geology and Geophysics, University of Oklahoma, 100 East Boyd Street, SEC 710, Norman, OK 73019-1009, dlondon@ou.edu

TRACE ELEMENT COMPARISON OF ANCIENT ROMAN INTAGLIOS AND MODERN SAMPLES OF CHROMIAN CHALCEDONY; AN ARCHAEOGEMOLOGICAL PROVENANCE STUDY
Abstract ID#: 230232

LULE, Cigdem, 2640 Patriot Blvd, Suite 240, Glenview, IL 60026, clule@gemguide.com and SHEN, Andy, GIA, 5345 Armada Dr, Carlsbad, CA 92008

COUNTRY-OF-ORIGIN DETERMINATION OF MODERN GEM PERIDOTS FROM LA-ICPMS TRACE-ELEMENT CHEMISTRY AND LINEAR DISCRIMINANT ANALYSIS (LDA)
Abstract ID#: 232711

SHEN, Andy¹, BLODGETT, Troy¹, and SHIGLEY, James E.², (1) GIA, 5345 Armada Dr, Carlsbad, CA 92008, ahshen1@live.com, (2) Research Department, Gemological Institute of America, 5345 Armada Drive, Carlsbad, CA 92008

PRECISELY IDENTIFYING THE MINES FROM WHICH GEMSTONES WERE EXTRACTED: A CASE STUDY OF COLOMBIAN EMERALDS
Abstract ID#: 226533

MCMANUS, Catherine E., Materialytics, LLC, P.O. Box 10988, Killeen, TX 76547, c.mcmanus@materialytics.com, 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

SAPPHIRE - A CRYSTAL WITH MANY FACETS
Abstract ID#: 226558

STONE-SUNDBERG, Jennifer Leigh, 3138 SW Cascade Drive, Portland, OR 97205, jennifer@crystal-solutions.net

GEM PARGASITE FROM MYANMAR: CRYSTAL STRUCTURE AND INFRARED SPECTROSCOPY
Abstract ID#: 223871

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

COMPARISON OF SURFACE MORPHOLOGY OF MONTANA ALLUVIAL SAPPHIRES BY SEM
Abstract ID#: 222892

BERG, Richard B., Montana Bureau of Mines and Geology, Montana Tech of the U. of Montana, 1300 W. Park St, Butte, MT 59701, dberg@mtech.edu and EQUALL, Nancy, Physics, ICAL, Montana State University, Bozeman, MT 59715

INVESTIGATION OF GEM MATERIALS USING 405NM LASER SPECTROSCOPY
Abstract ID#: 222431

BARWOOD, Henry L., Chemistry and Physics, Troy University, MSCX 312G, Troy, AL 36082, hbarwood@troycable.net

Concluding Remarks
Abstract ID#: 234288

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

216.
T216. Gemological Research in the 21st Century: Characterizing Diamonds and other Gem Minerals