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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 424 provides the full title and the coauthors (if any) of the articles cited. The inclusive pages for each issue are: Spring (Sp) 1–94; Summer (Su) 95–188; Fall (F) 189–290; Winter (W) 291–424.
A
Afghanistan
ruby and sapphire from Jegdalek (Bowersox)Su00:110ff
Alexandrite
synthetic, developments in the 1990s (Koivula)W00:360ff
Amber
assemblage with plastic (GTLN)Su00:155–156
Baltic, with lizard inclusion (GN)Su00:162–163
heat treatment of, in the 1990s (McClure)W00:336ff
Amethyst, see Quartz; Quartz, synthetic
Ametrine, see Quartz; Quartz, synthetic
Ammonite
mosaic triplets with glass caps (GN)F00:261–262
pyritized, from Russia (GN)Sp00:70–71
Amphiboles
blue and green, marketed as jade (GN)Sp00:66–67
Angola
mining and production of diamonds in (GN)Su00:161–162
Anhydrite
from Iran (GN)F00:262–263
Antigua
pre-Columbian gems and ornamental materials from (Murphy)F00:234ff
“Aqua Aura”
quartz and topaz with a metallic coating (McClure)W00:336ff
Aquamarine
from India (GN)F00:263–264
see also Beryl; Beryl, synthetic
Arizona, see United States
Assembled stones
see Amber, Ammonite, Feldspar, Opal
Auctions
and contemporary jewelry (Misiorowski)W00:398ff
of jadeite (Hughes)Sp00:2ff
Australia
keshi cultured pearls from (GN)Sp00:70–71
marketing of Argyle diamonds from (GN)Su00:161–162
B
Bellataire diamonds, see Diamond treatment—HPHT
Beryl
cat’s-eye, bicolored (GN)Su00:163–164
localities of the 1990s (Shigley)W00:292ff
treatment of, in the 1990s (McClure)W00:336ff
see also Aquamarine, Emerald
Beryl, synthetic
developments in the 1990s (Koivula)W00:360ff
pink overgrowth on synthetic emerald seed (GN)Sp00:77
Bismuth
laboratory-grown crystals (GN)Sp00:77–78
Bolivia
ametrine from (GN)Su00:163
Book reviews
1000 Photos of Minerals and Fossils (Eid, Viard)Su00:175
Black Opal (Pardey)F00:279
Crystal Enchantments: A Complete Guide to Stones and Their Magical Properties (Conway)Sp00:84
The Diamond Formula—Diamond Synthesis: A Gemmological Perspective (Barnard)F00:278
Diamonds and Mantle Source Rocks in the Wyoming Craton with a Discussion of Other U. S. Occurrences (Hausel)F00:279
Diamonds and Precious Stones (Voillot)Sp00:84
Fire into Ice: Charles Fipke and the Great Diamond Hunt (Frolick)Su00:175
Gems and Gem Industry in India(Karanth)F00:278–279
Gems & Jewelry Appraising, 2nd ed. (Miller)Su00:174–175
Gemstones: Quality and Value, Vol. I (Suwa)F00:277–278
The Microworld of Diamonds (Koivula)F00:277
Proceedings of the VIIth International Kimberlite Conference (Gurney et al., Eds.)Su00:174
Romance of the Golconda Diamonds (Khalidi)Sp00:83
Rough Diamonds: A Practical Guide (Peters)Sp00:83–84
Ruby, Sapphire and Emerald Buying Guide (Newman)Sp00:83
Botswana
production at the Orapa diamond mine (GN)Su00:160–161
Brazil
emerald and quartz intergrowth from (GN)Su00:164–165
gemstones of (GN)F00:266–267
tourmaline from Paraíba—new locality (GN)Sp00:73; update on mining and production of (GN)F00:269–271
Burma, see Myanmar
C
California, see United States
Canada
diamond production and exploration in (GN)Su00:160–161, 161–162
marketing of diamonds from (GN)Su00:161–162
nephrite from British Columbia (GN)Sp00:69–70
Cathodoluminescence
of GE POL HPHT-processed diamonds (Smith)F00:193ff
Cat’s-eye, see Chatoyancy
Chalcedony
with induced dendritic plume (GN)Su00:170–171
“Challenge,” see Gems & Gemology
Chatoyancy
in beryl from Pakistan (GN)Su00:163–164
in chrysoberyl with gray color (GTLN)F00:254
Chemical composition
of diamond—single nitrogen in GE POL HPHT-processed (Fisher)Sp00:42ff, (Smith)F00:192ff
of haüyne from Germany (Kiefert)F00:246ff
of purple to purplish red taaffeite (Schmetzer)Sp00:50ff
of ruby and sapphire from Afghanistan (Bowersox)Su00:110ff
of sapphire from Madagascar (Schwarz)F00:216ff
technological developments in the 1990s (Johnson)W00:380ff
Chile
lapis lazuli from the Coquimbo Region (Coenraads)Sp00:28ff
China
nuclei in freshwater cultured pearls from (Scarratt)Su00:98ff, (Let)F00:191
Chiton, see Shell
Chloromelanite
composition of (Hughes)Sp00:2ff
Chrysoberyl
cat’s-eye, with gray bodycolor (GTLN)F00:254
irradiation of, in the 1990s (McClure)W00:336ff
localities of the 1990s (Shigley)W00:292ff
synthetic, developments in the 1990s (Koivula)W00:360ff
Citrine, see Quartz; Quartz, synthetic
Clarity enhancement
developments in the 1990s (McClure)W00:336ff
see also Filling, fracture or cavity; specific gem material
Coating
developments in the 1990s (McClure)W00:336ff
dichroic backing on moonstone (GN)Sp00:75
on natural pearls (GTLN)Sp00:65
silicon, on drusy materials (GN)Sp00:76
Colombia
new emerald deposits at La Pita and Polveros (GN)Sp00:68–69
ruby and sapphire from the Mercaderes–Río Mayo region (GN)F00:268
Color, cause of
in HPHT-processed diamonds—GE POL near colorless (Smith)F00:192ff; yellow to green (Reinitz)Su00:128ff
in jadeite (Hughes)Sp00:2ff
in lavender sugilite with green areas (GN)F00:268–269
in purple to purplish red taaffeite (Schmetzer)Sp00:50ff
in spinel from Madagascar (GN)Su00:169–171
in yellow sapphire (GN)F00:266–267
Color, description of
developments in the 1990s (Johnson)W00:380ff
Copal
with liquid inclusions, from Madagascar (GN)Sp00:67–68
Coral
exploration in Hawaii (GN)F00:263–264
Corundum
basaltic origins of (GN)F00:266–267
localities of the 1990s (Shigley)W00:292ff
synthetics manufactured in the 1990s (Koivula)W00:360ff
treatment of, in the 1990s (McClure)W00:336ff
see also Ruby, Sapphire
Crystal morphology
of ruby and sapphire from Afghanistan (Bowersox)Su00:110ff
of taaffeite (Schmetzer)Sp00:50ff
Cuts and cutting, see Diamond, cuts and cutting of; Lapidary arts
D
De Beers
new role in the diamond industry (GN)Su00:161–162, F00:261
Designers
prominent in the 1990s (Misiorowski)W00:398ff
Diamond
localities of the 1990s (Shigley)W00:292ff
marketing and economics of—at APEC International Jewellery Conference in Melbourne (GN)F00:260–261; at 2nd International Rough Diamond Conference in Israel (GN)Su00:161–162
mining and production of—at 2nd International Rough Diamond Conference in Israel (GN)Su00:161–162; at PDAC (GN)Su00:160–161
see also Diamond, colored; Diamond, cuts and cutting of; Diamond, inclusions in; Diamond simulants; Diamond, synthetic; Diamond treatment
Diamond, colored
blue, zoned (GTLN)Su00:156–157
chameleon (GTLN)Sp00:60–61
white (GTLN)Su00:156
see also Diamond, synthetic; Diamond treatment
Diamond, cuts and cutting of
design trends in the 1990s (Misiorowski)W00:398ff
technological developments in the 1990s (Johnson)W00:380ff
“Tycoon cut” (GN)Su00:160
Diamond, inclusions in
flower-like, causes of (GTLN)F00:255–256
removal of, by new laser treatment (McClure)Su00:138ff
Diamond simulants
diamond fragments in metallic matrix imitating black diamond (GN)Su00:171–173
of the 1990s (Koivula)W00:360ff
see also Moissanite, synthetic
Diamond, synthetic
blue (GTLN)Sp00:62–63
developments in the 1990s (Koivula)W00:360ff, (Johnson)W00:380ff
Diamond treatment
developments in the 1990s (McClure)W00:336ff
fracture filling—new Oved filler (Shigley)Su00:147ff
HPHT (high pressure/high temperature)—to decolorize brown type IIa diamonds (GE POL), identification of (Fisher)Sp00:42ff, (Let)Su00:96–97, (Smith)F00:192ff, (McClure)W00:336ff; to produce blue and pink (GTLN)F00:254–256; to produce yellow to green (Reinitz)Su00:128ff
HPHT-decolorized diamonds from Russia (Smith)F00:192ff
by InColor, to produce black and green (GTLN)Sp00:61–62
irradiated green—1937 GIA Gem Trade Laboratory report on (GTLN)F00:256
new lasering technique (McClure)Su00:138ff
technological developments in the 1990s (Johnson)W00:380ff
Diffusion treatment
developments in the 1990s (McClure)W00:336ff
Donors
“Thank You, Donors” Su00:154
Drusy gem materials
coated with silicon (GN)Sp00:76
hematite from Arizona (GN)Sp00:68–69
in jewelry of the 1990s (Misiorowski)W00:398ff
Dumortierite
from Sri Lanka (GTLN)Sp00:62–63
Dyeing
of freshwater cultured pearl (GN)Sp00:75
of gem materials in the 1990s (McClure)W00:336ff
E
Editorials
“Breakthrough Technology” (Boyajian)Sp00:1
“The Challenge of Change” (Boyajian)W00:291
“The Dr. Edward J. Gübelin Most Valuable Article Award” (Keller)Sp00:79–80
“New Diamond Treatments: What Do They Mean for the Gemological Laboratory?” (Boyajian)F00:189
“Not Invented Here” (Keller)Su00:95
EDXRF (energy-dispersive X-ray fluorescence), see Spectrometry, X-ray fluorescence
Electron microprobe analysis
of purple to purplish red taaffeite (Schmetzer)Sp00:50ff
Emerald
from Colombia (GN)Sp00:68–69
fillers in—developments in the 1990s (McClure)W00:336ff
localities of the 1990s (Shigley)W00:292ff
with quartz intergrowth (GN)Su00:164–165
see also Beryl
Emerald, synthetic
developments in the 1990s (Koivula)W00:360ff
Errata
abstract of Collins et al. article written by Ilene Reinitz (GN)F00:274
Mary Shore of Denver, Colorado, added to 1999 Challenge Winners (GN)Sp00:78
photo credit attributed to Maha Tannous (GN)F00:274
spelling of “malaia” corrected to “malaya” (GN)Sp00:78
Exploration—see Mining and exploration
F
Faceting, see Lapidary arts
Feldspar
orthoclase with dichroic backing (“Celestial moonstone”) (GN)Sp00:75
Filling, fracture or cavity
developments in the 1990s (McClure)W00:336ff
see also Diamond treatment; Ruby, treatment of
Fluorescence, ultraviolet
of amber and plastic, used to detect assemblage (GTLN)Su00:155–156
of HPHT-processed yellow to green diamonds (Reinitz)Su00:128ff
Forsterite
synthetic, developments in the 1990s (Koivula)W00:360ff
Fourier transform infrared spectrometer (FTIR), see Spectroscopy, infrared
Fresnoite
from California, faceted (GN)F00:264–266
synthetic, developments in the 1990s (Koivula)W00:360ff
G
Garnet
color-change, photography of (Let)Su00:97,188
hydrogrossular, massive pink carving (GTLN)Sp00:63–64
localities of the 1990s (Shigley)W00:292ff
GE POL diamonds, see Diamond treatment—HPHT
Gem identification
of synthetics and simulants (Koivula)W00:360ff
technological developments in the 1990s (Johnson)W00:380ff
of treated gem materials (McClure)W00:336ff
Gem localities
of the 1990s (Shigley)W00:292ff
see also Mining and exploration; specific country; specific gem material
Gems & Gemology
“Challenge” Sp00:81–82
list of “Challenge” winners and answers F00:275
see also Donors, Editorials, Errata
Germany
haüyne from the Eifel district (Kiefert)F00:246ff
“Ghost jade”
green amphibolite rock from Nevada (GN)Sp00:66–67
Glass
simulating purpurine (GTLN)Su00:157–158
Grading
developments in cut evaluation and color measurement in the 1990s (Johnson)W00:380ff
Greenland
tugtupite (iridescent orthoamphibole) and aventurine quartz from (GN)Sp00:73–74
Grossular
from British Columbia (GN)Sp00:69–70
see also Garnet
Growth structures
analysis of, technological developments (Johnson)W00:380ff
in Chinese freshwater cultured pearls (Scarratt)Su00:98ff
in Kasumiga freshwater cultured pearls from Japan (GN)Su00:167–168
in ruby and sapphire from Afghanistan (Bowersox)Su00:110ff
in sapphire from Antsiranana, Madagascar (Schwarz)F00:216ff
H
Haüyne
from Germany—gemological, chemical, and spectroscopic properties of (Kiefert)F00:246ff
Hawaii, see United States
Heat treatment
developments in the 1990s—enhancement and detection (McClure)W00:336ff; technological (Johnson)W00:380ff
high temperature, at high pressure (HPHT)—to decolorize type IIa GE POL diamonds (Fisher) Sp00:42ff, (Smith)F00:192ff; identification of, in yellow to green diamonds (Reinitz)Su00:128ff
of Mong Hsu ruby, and filling of fractures (GTLN)F00:257–259, (McClure)W00:336ff
see also specific gem material
Hematite
drusy, from Arizona (GN)Sp00:68–69
magnetic imitation of (GN)F00:272
HPHT treatment, see Diamond treatment—HPHT
Hydrogrossular
pink carving (GTLN)Sp00:63–64
I
Imitations
developments in the 1990s (Koivula)W00:360ff
see also specific gem material
Impregnation
of jadeite, turquoise, and opal—developments in the 1990s (McClure)W00:336ff
Inclusions
calcite and dolomite, in trapiche ruby from Myanmar (GN)Su00:168–169
dendritic plume electrochemically induced in chalcedony (GN)Su00:170–171
in haüyne from Germany (Kiefert)F00:246ff
liquid, in copal (GN)Sp00:67–68
lizard, in Baltic amber from Poland (GN)Su00:162–163
in purple to purplish red taaffeite (Schmetzer)Sp00:50ff
of pyrite in lapis lazuli from Chile (Coenraads)Sp00:28ff
in ruby and sapphire from Afghanistan (Bowersox)Su00:110ff
in sapphire from Antsiranana, Madagascar (Schwarz)F00:216ff
see also Diamond, inclusions in; Filling, fracture or cavity; and specific host gem material
India
aquamarine from Tamil Nadu State (GN)F00:263
gem localities in (Shigley)W00:292ff
Infrared spectroscopy, see Spectroscopy, infrared
Instruments
developments in the 1990s (Johnson)W00:380ff
see also Microscopy; PIXE; Spectrometry, laser ablation–inductively coupled plasma–mass; Spectrometry, Raman; Spectrometry, X-ray fluorescence; Spectroscopy, infrared; Spectroscopy, UV-visible-NIR
International Geological Congress (31st)
in Rio de Janeiro, Brazil, highlights of (GN)F00:266–267
International Rough Diamond Conference (2nd)
in Tel Aviv, Israel, presentations at (GN)Su00:161–162
Internet
developments in the 1990s (Johnson)W00:380ff
Iran
anhydrite from Persian Gulf islands (GN)F00:262–263
Irradiation
developments in gemstone enhancement in the 1990s (McClure)W00:336ff
J
Jade
amphibole rock simulating (GN)Sp00:66–67
geology of deposits worldwide (GN)F00:266–267
localities of the 1990s (Shigley)W00:292ff
significance to the Chinese culture (Hughes)Sp00:2ff
see also Jadeite, Nephrite
Jadeite
coating, dyeing, and impregnation of, in the 1990s (McClure)W00:336ff
identification of treatment in (GN)F00:260–261
from Myanmar—geology, mining, trading, evaluation, enhancements, and nomenclature of (Hughes)Sp00:2ff
see also Jade
Japan
Kasumiga freshwater cultured pearls from (GN)Su00:167–168
Jasper
orbicular, from Madagascar (GN)Sp00:69
Jewelry
with chitons (GN)Sp00:67
gem materials, cuts, metals, setting styles, designers, and other developments in the 1990s (Misiorowski)W00:398ff
with “floating” diamonds, set in resin (GN)Sp00:77
L
Lapidary arts
concave faceting of sapphire (GN)F00:273
developments in the 1990s—in cutting styles and use in jewelry (Misiorowski)W00:398ff; in technology (Johnson)W00:380ff
in Madagascar (GN)F00:267–268
Lapis lazuli
from Chile—geology, mining, production, evaluation, gemology, marketing, and simulants of (Coenraads)Sp00:28ff
historical significance of (Coenraads)Sp00:28ff
Latendresse, John
obituary (Let)F00:91
Luminescence
developments in spectrometry and imaging technology in the 1990s (Johnson)W00:380ff
transmission—of chameleon diamonds (GTLN)Sp00:60–61; of HPHT-processed yellow to green diamonds (Reinitz)Su00:128ff
see also Cathodoluminescence; Fluorescence, ultraviolet; Photoluminescence
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