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This index gives the first author (in parentheses), the issue, and the first page (plus “ff” for feature articles, to indicate numerous pages following) of the article in which the indexed subject occurs. For Gem News (GN), Gem Trade Lab Notes (GTLN), and Letters (Let) sections, inclusive pages are given for the subject item. The Author Index on page 320 provides the full title and the coauthors (if any) of the articles cited. The inclusive pages for each issue are: Spring (Sp) 1–78; Summer (Su) 79–156; Fall (F) 157–242; Winter (W) 243–320.
A
Abalone pearl
see Pearl, cultured
Afghanistan
serpentine from (GN)W98:297
spodumene from (GN)W98:294
Agate
“flame” (GN)Su98:136–137
glass imitation of (GN)Sp98:55
Amethyst
from Arizona (GN)F98:219–220
Raman spectrum of, in historical object (Hänni)Su98:102ff
synthetic (GN)Sp98:54–55
Andalusite
chiastolite sphere (GN)Sp98:51
Andradite, see Garnet
Aquamarine
from Klein Spitzkoppe, Namibia (Cairncross)Su98:114ff
from Madagascar (GN)Su98:137
see also Beryl
Arizona, see United States
Ashbaugh III, Charles E.
obituary (GN)Sp98:63
Assembled stones
beryl imitating trapiche emerald (GTLN)F98:212
bicolored glass (GTLN)F98:215
in historical religious objects (Hänni)Su98:102ff
mother-of-pearl doublet (GTLN)Sp98:45–46
quartz and mother-of-pearl with “wild life” patterns (GN)F98:229–230
Asterism
double, in ruby (GTLN)F98:217
in sapphire from Madagascar (GN)Su98:140–141
in scapolite (GTLN)Sp98:48
B
Barite
inclusions in fluorite (Koivula) W98:281ff
Benitoite
erratum to Fall 1997 article on (GN)F98:230
update on mining of (GN)Su98:137
Beryl
assemblage imitating trapiche emerald (GTLN)F98:212
from Klein Spitzkoppe, Namibia (Cairncross)Su98:114ff
Maxixe, faded and fading (GTLN)W98:284
trapiche, from Madagascar (GN)Su98:137–138
see also Aquamarine, Assembled stones, Emerald
Bezoar, see Concretions
Birthstones
exhibit at Carnegie Museum of Natural History (GN)Su98:145
Blue diamonds
see Diamond, colored
Book reviews
Bulgari (Mascetti and Triossi) W98:303
Cameos: Classical to Costume (Clements and Clements) F98:232–233
Collecting and Classifying Colored Diamonds (Hofer) W98:303–304
Cultured Pearls: The First Hundred Years (Müller) Sp98:66
Dana’s New Mineralogy, 8th ed. (Gaines, Skinner, Foord, Mason, and Rosenzweig) Sp98:66–67
Encyclopedia of Mineral Names (Blackburn and Dennen) Su98:149
Gem and Jewellery Year Book 1997–98 (Kala and Kala) W98:305
Gemme del Vicento [Gems of Vicenza] (Boscardin and Tescari) Sp98:67
Gemstones of Brazil: Geology and Occurrences (Delaney) Su98:148
GIA Gem Identification Laboratory Manual (GIA) F98:232
Glossary of Geology (ed. by Jackson) W98:305
Mineral Collector’s Handbook (Krause) Sp98:67
The Nature of Diamonds (ed. by Harlow) W98:304–305
The Pearl Book: The Definitive Buying Guide (Matlins) Su98:148
Proceedings of the Sixth International Kimberlite Conference (ed. by Sobolev and Mitchell) Su98:149
Warman’s Jewelry, 2nd ed. (Romero) F98:233
Brazil
emerald from Tocantins (GN)Sp98:52
Brilliance
analysis of, in round-brilliant-cut diamonds (Hemphill)F98:158ff
Burma, see Myanmar
C
Calcareous concretions, see Concretions
Calcite
colored by inclusions (GTLN)Su98:127
California, see United States
Canada
diamond exploration in Alberta (GN)Su98:134
diamond production in the Northwest Territories (GN)Su98:134–135, F98:219, W98:290–292
Canadian Gemmological Association
9th annual conference (GN)Su98:145
Cathodoluminescence
and photoexcitation (GN)Sp98:61–62
tomography to fingerprint diamonds (Sunagawa)W98:270ff
Cat’s-eye, see Chatoyancy
Chalcedony
with goethite inclusions, from Madagascar (GN)W98:295
Raman spectrum of, in historical religious object (Hänni)Su98:102ff
“Challenge,” see Gems & Gemology
Change-of-color phenomenon, see Color change
Chatoyancy
in opal (GTLN)Sp98:46; (GN)Su98:138–140
Chemical composition
of rubies, natural and synthetic (Muhlmeister)Su98:80ff
Chiastolite, see Andalusite
China
andalusite sphere from (GN)Sp98:51
diamond crystals from (GN)Sp98:50
freshwater cultured pearls from (GTLN)F98:216
Chromite
inclusion in diamond (GTLN)W98:285–286
Chrysoberyl
dark green, vanadium-colored, from Tanzania (GTLN)F98:212–213
Citrine
Raman spectrum of, in historical religious object (Hänni)Su98:102ff
Coating
of beryl with plastic, to imitate trapiche emerald (GTLN)F98:212
of diamond to produce pink color (GTLN)Su98:128–129
of drusy materials with titanium and gold (GN)Su98:142–143
of quartz with dichroic material (GN)Sp98:55–56
of topaz to induce various colors (GN)Su98:143–144
Colombia
daughter crystal in emerald from (GTLN)Sp98:44
emerald mining in (GN)F98:220–221
first World Emerald Congress held in Bogotá (GN)Sp98:56–57
Color, cause of
in irradiated reddish purple diamond (GTLN)F98:213–214
Color change
in garnet (GN)Su98:138, F98:222–223
in synthetic diamond (GTLN)W98:286–287
Color grading
of natural-color type IIb blue diamonds (King)W98:246ff
Color zoning, see Zoning
Colorado, see United States
Concretions
bezoar collection (GN)Sp98:57
calcareous “pearls” (GTLN)W98:288
Coral
blue sheen, from Alaska (GN)Sp98:51
Corundum
bicolored, from Vietnam (GN)Sp98:51–52
diffusion treated to turn red (GTLN)Su98:127–128; (Muhlmeister)Su98:80ff
see also Ruby, Sapphire
Corundum, synthetic
see Ruby, synthetic; Sapphire, synthetic
Cut
analysis of brilliance in round-brilliant-cut diamonds (Hemphill)F98:158ff
see also Faceting
D
Danburite
from California (GN)F98:220
Diamond
conference reports—Financial Times, in Belgium (GN)W98:292–293; International Mineralogical Association, in Canada (GN)F98:218–219; International Rough Diamond, in Israel (GN)Su98:135–136
crystals from Russia and China (GN)Sp98:50
exhibit at American Museum of Natural History (GN)Sp98:62
fingerprinting of two diamonds cut from the same rough (Sunagawa)W98:270ff
mining and exploration in Canada (GN)Su98:134–135, F98:219, W98:290–292
see also Diamond, colored; Diamond, cuts and cutting of; Diamond, inclusions in; Diamond simulants; Diamond, synthetic; Diamond treatment; Instruments
Diamond, colored
blue, type IIb (King)W98:246ff
brown, with green-to-blue color zones (GTLN)W98:285
brown-yellow, color appearance changing with viewing direction (GTLN)Su98:129
Diamond, cuts and cutting of
blue (King)W98:246ff
in India (Sevdermish)Sp98:4ff
modeling of brilliance in round brilliants (Hemphill)F98:158ff
Diamond, inclusions in
chromite coated with graphite (GTLN)W98:285–286
diopside and pyrope, identified by Raman analysis (GTLN)F98:214
triangular “voids” (GTLN)W98:286
Diamond simulants
gallium phosphide (GN)F98:228–229
synthetic moissanite (GN)Sp98:55; (GTLN)F98:215–216
Diamond, synthetic
color change in (GTLN)W98:286–287
Diamond treatment
coated pink (GTLN)Su98:128–129
reddish purple created from orangy yellow (GTLN)F98:213–214
Diffusion treatment
of corundum to turn red—(GTLN)Su98:127–128;
trace-element chemistry of (Muhlmeister)Su98:80ff
of synthetic sapphire (GN)W98:301–302
Donors
sapphirine donated by G&G reader (GN)F98:226
“Thank You, Donors” Su98:147
Doublets, see Assembled stones
E
Editorials
Demystifying Diamond Cut (Boyajian)F98:157
The Dr. Edward J. Gübelin Most Valuable Article Award (Keller)Sp98:1–2
Support Your Local Researcher (Keller)Su98:79
EDXRF, see X-ray fluorescence spectrometry
Ekati diamond mine, Northwest Territories
see Canada
Emerald
from Brazil (GN)Sp98:52
mining in Colombia (FN)F98:220–221
three-phase inclusions in (GTLN)Sp98:44
World Emerald Congress, first (GN)Sp98:56–57
see also Beryl
Emerald simulant
assemblage with plastic coating, imitating trapiche (GTLN)F98:212
Errata
benitoite mining was authorized (GN)F98:230
photo credit provided (GN)W98:302
pyrope-spessartine spectrum corrected (GN)W98:302
rossmanite as species of tourmaline (GN)W98:302
ruby locality in Russia corrected (GN)F98:230
source of information about EGL corrected (GN)W98:302
Exploration—see Mining and exploration
F
Faceting
analyzing brilliance in round-brilliant-cut diamonds (Hemphill)F98:158ff
buff-top faceted quartz cut from spheres (GN)Sp98:55–56
of cultured pearls (GTLN)W98:287
of liddicoatite tourmaline to display color zoning (GN)Sp98:54
machine for diamonds and colored stones (GN)Su98:144–145
see also Diamond, cuts and cutting of; Lapidary arts
Fading
in maxixe beryl (GTLN)W98:284
Feldspar
indistinguishable from iolite (GN)W98:295–296
labradorite, striped, from Madagascar (GN)F98:223–224
transparent, from North America (GN)Sp98:57
“Flame agate,” see Agate
Fluorescence, ultraviolet
of type IIb blue diamonds (King)W98:246ff
Fluorite
barite inclusions in (Koivula)W98:281ff
from Switzerland (GN)Sp98:60–61
Foord, Eugene E.
obituary (GN)Sp98:63
Fourier transform infrared spectrometer (FTIR), see Spectroscopy, infrared
G
Garnet
andradite, from Yemen (GN)F98:220
color change—from Madagascar (GN)F98:222–223; from Sri Lanka (GN)Su98:138
grossular, from Mali (GN)F98:221–222
pyrope-spessartine, from Madagascar (GN)F98:222–223; erratum (GN)W98:302
Raman spectrum of, in historical religious object (Hänni)Su98:102ff
spessartine, from Madagascar (GN)Sp98:52–53.
Gems & Gemology
“Challenge” Sp98:64–65
list of “Challenge” winners and answers F98:231
see also Donors, Editorials
Glass
bicolored, blue and colorless (GTLN)F98:215
in historical religious objects (Hänni)Su98:102ff
imitating agate (GN)Sp98:55
“Libyan Desert” (GN)Sp98:58
obsidian simulant—”green” (GTLN)Su98:129–130; sphere (GN)W98:301
see also Assembled stones
Gold, see Coating, Inclusions
Grossular, see Garnet
H
Hackmanite
from Myanmar (GN)F98:223
Heat treatment
of ruby (GTLN)Sp98:46–47
of sapphire (GTLN)Sp98:47–48
see also Diffusion treatment
Hemimorphite
(GTLN)Sp98:44–45
I
Illinois, see United States
Inclusions
of barite in fluorite (Koivula)W98:281ff
of chalcotrichite in calcite (GTLN)Su98:127
in emerald from Colombia (GTLN)Sp98:44
of goethite in chalcedony from Madagascar (GN)W98:295
of gold, pyrrhotite, and clinozoisite in sapphire from Montana (GN)W98:296–297
internal diffusion in heat-treated sapphire (GTLN)Sp98:47–48
of rutile needles that slide in quartz (GN)F98:225–226
of a salt crystal in Colombian emerald (GTLN)Sp98:44
in topaz—from Myanmar (GN)W98:297–298; irradiated (GN)W98:300
of zircon in jadeite (GTLN)Sp98:45
see also Diamond, inclusions in; and specific host gem material
India
history and current status of the diamond-cutting industry in (Sevdermish)Sp98:4ff
Indonesia
auction of South Seas pearls from (GN)W98:302
Infrared spectroscopy, see Spectroscopy, infrared
Intarsia
sculpture (Anderson)Sp98:24ff
Iolite
indistinguishable from feldspar (GN)W98:295–296
Instruments
cathodoluminescence and photo-excitation spectrometry (GN)Sp98:61–62
faceting machine for diamonds and colored stones (GN)Su98:144–145
X-ray topography and cathodoluminescence tomography
to fingerprint diamonds (Sunagawa)W98:270ff
see also Spectroscopy, infrared; Spectroscopy, Raman; X-ray fluorescence spectrometry
International Gemmological Conference, 26th
more on talks presented (GN)Sp98:57–62
International Mineralogical Association
colored stone presentations at (GN)W98:293–295
diamond presentations at (GN)F98:218–219
meeting announcement (GN)Sp98:63
International Rough Diamond Conference
in Israel, summary of (GN)Su98:135–136
Israel, see International Rough Diamond Conference
J
Jade
simulant, amphibole rock (GN)F98:229
see also Jadeite
Jadeite
simulated boulders (GN)Su98:141–142
with zircon inclusions (GTLN)Sp98:45
see also Jade, Maw-sit-sit
K
Kashmir, see Pakistan
L
Labradorite, see Feldspar
Lapidary arts
cabochons of quartz and mother-of-pearl with “wild life” patterns (GN)F98:229–230
intarsia sculpture (Anderson)Sp98:24ff
see also Diamonds, cuts and cutting of; Faceting
Lapis lazuli
from Colorado (GN)F98:224
Leigha
intarsia sculpture (Anderson)Sp98:24ff
Libyan Desert glass, see Glass
Liddicoatite
from Madagascar (GN)Sp98:54
Luminescence
see Cathodoluminescence; Fluorescence, ultraviolet; Instruments; Phosphorescence
Appears on pages 315-318
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