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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 240 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) 79–172; Fall (F) 1–180; Winter (W) 173–242.
Note: The Fall 1999 Symposium Proceedings issue was paginated separately from the other issues in this volume year.
A
Africa
colored stone sources in (Suleman)F99:66–67
diamond sources and production in (Gurney)F99:34–36
Agate
from Montana, fashioned "Aggos"(GN)W99:210
Alexandrite
with a "fish-eye" effect (GTLN)Sp99:42
Amethyst, see Ametrine
Ametrine
synthetic, from Russia (Balitsky)Su99:122ff
Andradite
from Canada (GN)Su99:146
cat’s-eye, from San Benito County, California (GN)Sp99:48–49
demantoid from the Ural Mountains, Russia—(Mattice) F99:151–152; inclusions
in (Krzemnicki)W99:92ff
Angola
diamond deposits in (Chambel)F99:155–156
diamonds from, determination of locality (GN)W99:208–209
Apatite
from Andhra Pradesh, India (GN)Sp99:51–52
Appraisals, see Marketing and Distribution
Aquamarine, synthetic
identification of (McClure)F99:86–87; from Russia (Smirnov)F99:175–176
Asia, Central
colored stone sources in (Bowersox)F99:140
Asia, Southeast
colored stone sources in (Larson)F99:64–65
Asterism
in ekanite from Sri Lanka (GN)W99:211–212
in quartz from Sri Lanka (GN)Sp99:54–55
in sapphire from Madagascar (GN)Su99:148–149
Australia
diamond—from the Merlin project (GN)Su99:143–144; sources and production (Janse)F99:37–39
B
Bastnäsite
faceted (GTLN)Su99:136–137
"Becke lines"
to determine relative R.I.’s in spinel (GN)Sp99:58
Belgium
Antwerp diamond sector (Pruwer)F99:46
Benitoite
update on (Shigley)F99:152–153
Beryl
cat’s-eye (GTLN)W99:202
red (Christenson)F99:140
see also Emerald
Beryl, synthetic
hydrothermal purple, from Russia (GN)Su99:152–153
see also Aquamarine, synthetic
Book reviews
Amber (Ross)W99:225
Arab Roots of Gemology—Ahmad ibn Yusuf al Tifaschi’s Best Thoughts on the Best of Stones (Huda, transl.)Sp99:63
Beyond Price—Pearls and Pearl-Fishing: Origins to the Age of Discoveries (Donkin)W99:224–225
Christmas Jewelry (Morrison)Su99:158
The Complete Handbook for Gemstone Weight Estimation (Carmona)Su99:157
Edelsteine: Symbole der Schönheit und der Macht (Gübelin and Erni)Su99:159
L’Emeraude: Connaissances Actuelles et Prospectives (Giard, Ed.)Sp99:63–64
Gem Minerals of Victoria (Birch and Henry)W99:225
Gemmologists’ Compendium, 7th ed. (Webster and Jobbins)Su99:157–158
Glossary of Mineral Synonyms (de Fourestier)Su99:158–159
The Great Encyclopedia of Precious and Decorative Stones (Sobczak and Sobczak)Sp99:64
Larousse des Pierres Précieuses (Bariand and Poirot)Sp99:64
Mani-Mala, or A Treatise on Gems (Tagore and Barot) Su99:159
The Photo-Atlas of Minerals (Kampf and Gerhold)Su99:159
Rock Crystal Treasures from Antiquity to Today (Raulet)W99:224
Standards & Applications for Diamond Report/Gemstone Report/Test Report (SSEF Swiss Gemmological Institute)Sp99:64
Brazil
opal in matrix from Piauí (GN)Sp99:53
spessartine from Minas Gerais and Rio Grande do Norte (GN)Sp99:55
tourmaline from Paraíba (Barbosa)F99:138
C
California, see United States
Canada
andradite from (GN)Su99:146
colored gemstones from (Larson)F99:64–65
faceted diamonds from the Ekati mine (GN)Sp99:47
iolite and other gems from (GN)Sp99:52
review of diamond sources and production in (Paget)F99:40–42
Cat’s-eye, see Chatoyancy
"Challenge," see Gems & Gemology
Charoite
simulants of (GN)W99:221–222
Chatoyancy
"pseudo-eye" in beryl (GTLN)W99:202
in taaffeite (GTLN)Sp99:46
in trapiche emeralds (GN)Su99:146–147
Chemical analysis, see Microprobe analysis; Spectrometry, laser ablation–inductively coupled plasma–mass (LA–ICP–MS); Spectrometry, X-ray fluorescence
China
diamond market in (Rothschild)F99:59
freshwater cultured pearls from Peach(F99:75), (GN)Sp99:53–54
sapphire from (Liangguang)F99:154
tremolite rock referred to as "Longxi jade" from (GN)W99:217–218
Chrysoberyl
from Andhra Pradesh, India (GN)Sp99:51–52
synthetic (Krzemnicki)F99:175
Citrine, see Ametrine
Coating
hematite formed on heat-treated garnet (GN)W99:220
Colombia
"enhydro" emerald from (GN)Sp99:49
Color change
in garnet from Madagascar (Schmetzer)W99:196ff
Color, description of
based on L*a*b* color space (Siripant)F99:162–163
by spectrophotometry (Wagner)F99:168–169
Concretions
non-nacreous pearls (GTLN)Su99:140
Corundum
heat treatment of (GN)W99:220–221
at the Smithsonian Institution (Feather)F99:144
see also Ruby, Sapphire
Corundum, synthetic
"Plato lines" and growth structures in (GN)Sp99:58–59
see also Ruby, synthetic; Sapphire, synthetic
Cubic zirconia
black, to simulate black diamond (Chalain)F99:173–174
D
Demantoid, see Andradite
Diamond
from Angola, determination of locality (GN)W99:208–209
faceted, from the Ekati mine, Canada (GN)Sp99:47
manufacturing and distribution of—in Antwerp (Pruwer)F99:46; global (Haas)F99:52; in India (Mitchell)F99:47–48; in Israel (Schnitzer)F99:49; in New York (Hasenfeld)F99:44–45
marketing and economics of—(Cohen)F99:55, (Pearson)F99:50, (Rapaport)F99:51, (Shor)F99:53–54; in China (Rothschild)F99:59; future of (panel)F99:116–117; in Japan (Kato)F99:58; in the U.S. (Janowski)F99:56–57
mining and production of—in Africa (Gurney)F99:34–36; in Angola (Chambel)F99:155–156; in Australia (GN)Su99:143–144, (Janse)F99:37–39; in Canada (Paget)F99:40–42; future production (Panel)F99:114–115; presentations at the PDAC (GN)Su99:142–143; in Russia (Sobolev)F99:43
octahedra in jewelry (GN)Su99:143
from Venezuela (GN)W99:209–210
see also Diamond, colored; Diamond, cuts and cutting of; Diamond, inclusions in; Diamond simulants; Diamond, synthetic; Diamond treatment
Diamond, colored
description of color (Hofer)F99:159
HPHT treatment of (GTLN)W99:203–204
jewelry design with (Perret)F99:170–171
sources of (Let)Su99:81
treated-color rough (GTLN)W99:203
Diamond, cuts and cutting of
evaluation of—(WR)F99:134–135; ideal (Schoeckert)F99:159–160; using virtual images (Hemphill)F99:158–159
with unusual amount of fire (GTLN)W99:202–203
Diamond, inclusions in
cloud, shaped like a hexagonal star (GTLN)Sp99:42–43
etch channels (GTLN)Su99:137–138
Diamond simulants
identification of (Shigley)F99:80–81
see also Cubic zirconia; Moissanite, synthetic
Diamond, synthetic
black (GTLN)Su99:138
colors of (Kanda)F99:174–175
identification of (GTLN)Su99:139, (Shigley)F99:80-81
from Russia (GN)Sp99:47–48, (GTLN)Su99:139
at the Tucson Gem and Mineral Shows (GN)Sp99:47–48
Diamond treatment
GE POL—update on (GN) Su99:144–145; photographic record (Moses)F99:14ff;
clues to the process (Schmetzer) W99:186ff
HPHT (high pressure/high temperature) to produce yellow to yellow-green(GTLN)W99:203–204
identification of (Reinitz)F99:88–89; of colored rough (GTLN)W99:203
Pegasus, see GE POL
Dickite, see Rocks
Diffusion treatment
of topaz, identification of (McClure)F99:86–87, (Underwood)F99:154–155
Disclosure
of treatments (WR)F99:136–137
Distribution, see Marketing and Distribution
Donors
"Thank You, Donors" Su99:156
Dyeing
of cultured freshwater pearls (GN)Sp99:55–56
E
Editorials
The 1999 International Gemological Symposium: What a Ride! (Keller and Kimmel) F99:1
The Dr. Edward J. Gübelin Most Valuable Article Award Sp99:2–3
Gems & Gemology Turns 65 (Liddicoat and Keller)W99:173
Nothing Is as Simple as It Seems (Keller)Su99:79
Symposium ’99: You Can’t Afford to Miss It! (Keller)Sp99:1
EDXRF (energy-dispersive X-ray fluorescence), see Spectrometry, X-ray fluorescence
Ekanite
star, from Sri Lanka (GN)W99:211–212
Emerald
"enhydro," from Colombia (GN)Sp99:49
filled—chemistry of fillers (GN)W99:219; degree of enhancement (McClure)
W99:176ff; filler identification (Johnson)Su99:82ff, (Hänni) F99:93–94,
(Hänni)146–147, (Garzon)F99:145, (Johnson) F99:149–151, (Let)W99:174; "invisible" (GTLN)Sp99:43–44
identification of natural and synthetic (Schmetzer)F99:84–85
sources worldwide (Schwarz)F99:62–63
trapiche cat’s-eye (GN)Su99:146–147
Endangered species
trade of gem materials from (Carmona)F99:169–170
Engraved gems, see Lapidary arts
Errata
credit for items in figures 4 and 5 of Spring 1999 Gem News corrected (GN)Su99:155
photo credit for figure 3 of Spring 1999 "Some Diagnostic Features…" article corrected (GN)Su99:155
photo labels for figures 6 and 7 of Winter 1998 "Fingerprinting of Two Diamonds…" article corrected (GN)Sp99:60
rossmanite description in Fall 1998 Gem News corrected (GN)Sp99:60
thermal inertia data in Winter 1997 "Synthetic Moissanite…" article corrected (GN)Sp99:60
F
Faceting, see Lapidary arts
Feldspar
sunstone from Oregon cut to highlight inclusions (GN)Sp99:49
Filling, see Emerald
Forsterite
colorless, from Sri Lanka (GN)Sp99:49–50
synthetic, as tanzanite simulant (GTLN)Su99:139–140, (McClure)F99:86–87
Fourier transform infrared spectroscopy (FTIR), see Spectroscopy, infrared
G
Garnet
color-change pyrope-spessartine, from Madagascar (Schmetzer)W99:196ff
heat-treated, with hematite coating (GN)W99:220
pyrope-almandine—from Kalalani, Tanzania (Seifert)Su99:108ff; from Orissa,
India (Goyal)F99:147
"watermelon" hydrogrossular-idocrase, from South Africa (GN)Sp99:50–51
see also Andradite, Grossular, Spessartine
Gems & Gemology
"Challenge" Sp99:61–62
list of "Challenge" winners and answers Su99:135
see also Editorials
Geology
global tectonics (Cook)F99:140–141
of sapphire and garnet from Kalalani, Tanzania (Seifert)Su99:108ff
GE POL
General Electric process to lighten diamonds distributed by Pegasus Overseas Ltd. (GN) Su99:144–145, (Moses) F99:14ff, (Schmetzer)W99:186ff
Glass
blue slag from Sweden, resembling opal (GN)Sp99:56
fused, sold as "cultured snow quartz" (GN)Sp99:56
identification of—gem simulants (McClure)F99:86–87; natural vs. manufactured (Owens)F99:152
simulating peridot (GTLN)Sp99:44
Globalization
in the gem and jewelry industry (Tempelsman)F99:2ff
Grading
Gem Quality Index (GQI) (Tashey)F99:163–164
see also Diamonds, cuts and cutting of
Grossular
from Romania (Ionescu)F99:139
tsavorite—identification of (McClure)F99:86–87; from Kalalani, Tanzania
(Seifert) Su99:108ff; from southern Tanzania (GN)Su99:151–152; from Madagascar (GN)W99:218
Growth structures
to identify Russian hydrothermal synthetic ruby and sapphire (Schmetzer)Sp99:17ff
in Russian synthetic ametrine (Balitsky)Su99:122ff
in synthetic corundum (GTLN)Sp99:58–59
H
Heat treatment, see specific gem materials
Hematite
coating on heat-treated garnet (GN)W99:220
I
Illumination
for jewelry retailers (Eickhorst)F99:166
Inclusions
carbonate crystal in sapphire indicative of unheated host (GTLN)W99:206
laser drill holes used as design elements (GN)Sp99:57–58
white zones that form in Mexican opals during fashioning (GN)W99:212–213
see also Diamond, inclusions in; Diamond, synthetic; and specific host gem materials
India
apatite from (GN)Sp99:51–52
chrysoberyl from (GN)Sp99:51–52
diamond manufacturing in (Mitchell)F99:47–48
pyrope-almandine from Orissa (Goyal)F99:147
rudraksha, organic gem material from (Panjikar)F99:152
Infrared spectroscopy, see Spectroscopy, infrared
Instruments
see Microprobe analysis; Spectrometry, Raman; Spectrometry, laser ablation–inductively coupled plasma–mass; Spectrometry, X-ray fluorescence; Spectroscopy, infrared; Spectroscopy, UV-visible
International Colored Gemstone Association Congress report (GN)Su99:145–146
International Gemological Symposium, 3rd (1999)
Proceedings of (Keller, Ed.) F99:Entire issue
Iolite
from British Columbia, Canada (GN)Sp99:52
Israel
diamond manufacturing and distribution in (Schnitzer)F99:49
J
Jade
tremolite rock from China, referred to as "Longxi jade" (GN)W99:217–218
see also Jadeite
Jadeite
enhanced (GTLN)Sp99:44–45
identification (McClure)F99:86–87
Japan
diamond market in (Kato)F99:58
Jasper
from Mexico, carved as spheres (GN)Sp99:52–53
from Romania (Ghergari)F99:139–140
Jewelry
antique and estate—by Chaumet (Scarisbrick)F99:97–98; early 20th century
(Misiorowski) F99:99–100; marketing of (Samuel)F99:101–102
design (Morris)F99:103, (Yurman)F99:104, (Edelstein) F99:105–106
with diamonds—colored (Perret)F99:170–171;
octahedra (GN)Su99:143
future of fine-quality (Panel)F99:120–121
with a purpose (Eisen)F99:170
K
Kenya
update on John Saul ruby mine (GN)W99:213–215
Kyanite
from Nepal (GN)Sp99:51–52
Kyocera
synthetic opal, polymer-impregnated "fire" type (GN)Su99:153–154
L
LA–ICP–MS spectrometry, see Spectrometry, laser ablation–inductively coupled plasma–mass
Lapidary arts
"Butterfly" cut (GN)Su99:154
drusy quartz carved into leaves (GN)Sp99:54
engraved gems from antiquity (Bernhardt)F99:169
fashioning of Montana agate (GN)W99:210
Gem Artists of North America (GANA) organization (Shank)F99:171
internal carving (GN)W99:222
laser drill holes as design elements, ("Luminaire") (GN)Sp99:57–58
matte finishing of facets on Oregon sunstone (GN)Sp99:49
"Longxi jade," see Jade
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