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Volume 16,
February 1986 - November 1988
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Volume 16, Number 1, February 1986
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BLUE SAPPHIRE FROM ELAHERA, SRI LANKA
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G. Heilmann,
U. Henn
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2
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BOWESITE: A NEW LAPIDARY MATERIAL
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S.M.B. Kelly
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5
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GEMI-LUSTA™ G1 500P REFLECTOMETER
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Instrument Evaluation Committee
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9
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HARDNESS OF AUSTRALIAN DIAMOND
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C.R. Baker
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11
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REPORT ON 20th I.G.C
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12
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PRESIDIUM DIAMETER
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G. Brown
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17
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FACETABLE BOWENITE
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R. Beattie,
G. Brown
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25
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Volume 16, Number 2, May 1986
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| The Proceedings of the 20th IGC, Sydney - Part 1.
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GEM MINERALS FROM THE EMBILIPITIYA AND KATARAGAMA
AREAS IN SRI LANKA
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P.C. Zwaan
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35
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EXAMINATION OF SURFACE FEATURES OF ARGYLE
DIAMONDS FROM WESTERN AUSTRALIA
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G.A. Tombs,
B. Sechos
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41
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OPAL FROM MEXICO
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E. Gubelin
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45
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REVIEW OF THE GEOLOGY OF THE GEMSTONES OF
SRI LANKA
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M.B. Katz
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52
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MINERALS AND GEMSTONES OF PAKISTAN
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C. Kovak
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57
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GEMSTONES IN CHINA – ESPECIALLY JADE AND SIMILAR STONES
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A. Chikayama
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60
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QUANTITATIVE CATHODOLUMINESCENCE OF GEMSTONES
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J. Ponahjo,
T. Koroschetz
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64
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OBSERVATION AND DIFFERENTIATION OF NATURAL AND SYNTHETIC QUARTZ USING LASER TECHNOLOGY
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K. Sato
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72
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ABSTRACTS - PART 1.
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80
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Volume 16, Number 3, August
1986
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| The Proceedings of the 20th IGC, Sydney - Part 2.
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STUDY OF SCAPOLITE, CORUNDUM & SPINEL CRYSTALS
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R. Vochten,
E. De Grave,
P.C. Zwaan
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91
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PRODUCTION TECHNIQUES OF COMMERCIALLY AVAILABLE GEM RUBIES
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K.
Schmetzer
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95
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GEMSTONES OF THE BEECHWORTH AREA
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W.D. Birch
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101
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MODES OF OCCURRENCE OF EMERALDS IN AUSTRALIA
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I.A. Mumme
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106
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LIMITATIONS TO THE SPECTROSCOPIC IDENTIFICATION OF
A TREATED DIAMOND
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L.A. Schiffman
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108
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GEM DEPOSITS IN SRI LANKA: RECENT DISCOVERIES
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E.G.G. Zoysa
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110
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BLUE-GREEN APATITE FROM GRAVELOTTE, SOUTH AFRICA
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G. Remaut,
R. Vochten
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115
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INCLUSIONS IN AUSTRALIAN SAPPHIRE BEFORE AND AFTER HEAT TREATMENT
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T. Coldham
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122
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COLOUR ZONING IN NATURAL AND SYNTHETIC MATERIALS
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A. Ghera,
G. Graziani,
S. Lucchesi,
M. Martini
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125
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ABSTRACTS
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116-121,
128-130
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Volume 16, Number 4, November 1986
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AN UNUSUAL KESHI PEARL
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G. Brown
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139
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HOLLANDITE IN QUARTZ
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J.I. Koivula,
C.W. Fryer
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141
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OPAL PINEAPPLES
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G. Pearson
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143
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BOULDER OPAL TRIPLET
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R. Brightman,
D. Sandeman
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152
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THE GEMMOLOGY OF THE SHELL CAMEO
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G. Brown
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153
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INCLUSIONS IN SAPPHIRE AND HEAT TREATMENT
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A.W. Moon,
M.R. Phillips
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163
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Volume 16, Number 5, February 1987
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SOME MORE ON CRYSTAL OPAL
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B. O'Leary
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175
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IVORINA: A NEW IVORY IMITATION
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G. Brown
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178
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DECORATIVE SERPENTINITE FROM THE MARBLE BAR AREA
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E.R. Segnit
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182
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FLUORITE AND ITS INCLUSIONS
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E.I. Gubelin,
J.I. Koivula
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184
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STRUCTURAL ASPECTS OF FINGERPRINT INCLUSIONS IN CORUNDUM
|
Tay Thye Sun
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188
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INCLUSION RELATED IRON THEFT IN AMETHYST
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J.I.. KoivuIa
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191
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PRODUCTION TECHNIQUES - KNISCHKA SYNTHETIC RUBIES
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K. Schmetzer
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192
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MISCELLANY: JET; PLASTIC IMITATION BIWAS; AUSTRALIAN COLOUR-CHANGING SAPPHIRES; ORISSA GARNET; AUSTRALIAN SYNTHETIC OPAL
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G. Brown
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195
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Volume 16, Number 6, May 1987
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PRESIDENTIAL ADDRESS TO CONFERENCE
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G.A. Tombs
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211
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A SYSTEM FORTHE EVALUATION OF OPAL
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Capt. Svein Haugen
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213
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INCLUSIONS IN YELLOW CHRYSOBERYL & ALEXANDRITE
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U. Henn
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217
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THE ORIGIN OF SAPPHIRE IN N.S.W.
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S.R. Pecover
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221
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THE STRUCTURE OF SEDIMENTARY OPAL
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Editor
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222
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NOTES ON TASMANIAN GEMSTONES
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C. Thrower,
D. Steane
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223
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PINK & VIOLET SAPPHIRES FROM NEPAL
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L. Kiefert,
K. Schmetzer
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225
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ClTRON CHRYSOPRASE
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G. Brown,
H. Bracewell
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231
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A NEW SYNTHETIC EMERALD
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S.M.B. KelIv,
G. Brown
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237
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NEW GEMS FROM RATNAPURA
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E. G. Zovsa
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239
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RESIN BONDED MALACHITE
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R. Brightman, M-L. Willheim
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239
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Volume 16, Number 7, August 1987
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A NEW 'SPOT READING' TECHNIQUE
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G.S. Walker
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253
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PRONOUNCED FLOW STRUCTURE IN OPAL
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J.I. Koivula
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257
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THE PLASTIC COATING OF GEMSTONES
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R.W. Hughes
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259
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A COPAL RESIN NECKLACE
|
G. Brown,
S.M.B. Kelly
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263
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GEMMOLOGICAL JOTTINGS: Turquoise, Scrimshaw, Synthetic Jelly Opal, Diamond Beam diamond probe
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G. Brown,
J. Snow
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267
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GOETHITE INCLUSION ALTERATION: A TEST
FOR ‘FIRED’ CITRINE QUARTZ
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J.I. Koivula
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271
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COLOUR GRADING COLOURED STONES
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F.A. Rundle
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Volume 16, Number 8, November 1987
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REVIEW OF JADE IN SOUTH AUSTRALIA
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J.G. Olliver
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283
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GEMMOLOGY STUDY CLUB LAB REPORTS 287
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LWUV FLUORESCENCE Of GEMSTONES
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G. Brown,
G. Snow
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296
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PYRITE IN CANADIAN AMMONITE
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J.I. Koivula
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304
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A NEW TREATMENT FOR TURQUOISE
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G. Brown,
J. Snow,
J. Lamb
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307
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SAPPHIRES
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Geological Survey of NSW
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309
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Volume 16, Number 9, February 1988
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ARGYLE CHAMPAGNE DIAMONDS
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G. Brown
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319
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PRECIOUS OPAL AT COOBER PEDY
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R.S. Robertson,
D.C. Scott
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323
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DIAGNOSTIC PROPERTIES OF THE LATEST SYNTHETICS
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E. Gubelin
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329
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SRI LANKAN EKANITE
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J. Snow,
G. Brown
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346
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MANGANOAN SUGILITE
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G. Wigmore
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351
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Volume 16, Number 10,
May
1988
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PRESIDENTIAL ADDRESS
|
G.A. Tombs
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359
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A COCONUT PEARL?
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G. Brown,
S.M.B. Kelly,
J. Snow
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361
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CAT'S-EYE EFFECT IN HEAT-TREATED ZIRCONS
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H.A.Hanne,
M. Weibel
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363
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PAUA SHELL
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G. Brown
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367
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HEMATITE IMITATION
|
G. Brown,
J. Snow
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371
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NUMERICAL APPROACH TO GEM IDENTIFICATION
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H.S. Pienaar
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374
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A JADE MISCELLANY
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G. Brown,
J. Snow
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381
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Volume 16, Number 11,
August
1988
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IDENTIFICATION OF RUBY BY E.S.R.
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D.R, Hutton,
G.J. Troup
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399
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NEW ZEALAND AURORA SHELL
|
A.S. McCabe,
G. Brown
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401
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THE A.E. ALEXANDER GAVEL
|
H. Bracewell
|
407
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IS IT AMBER?
|
J. Snow,
G. Brown
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409
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HEAT TREATMENT OF RUBY
|
S.A. Currie
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417
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VERNEUIL SAPPHIRE WITH INDUCED FRACTURES
|
G. Brown
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419
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THE EW-120SG ELECTRONIC DENSIMETER
|
Instrument Evaluation Committee
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422
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STUDY CLUB LAB REPORTS
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424
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ANALYSIS OF RUBIES BY PIXIE
|
S.M. Tang et al.
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430
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Volume 16, Number 12, November 1988
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PRESIDENT'S REPORT
|
G.A. Tombs
|
439
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DIAMOND SELECTER II
|
Instrument Evaluation Committee
|
440
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|
THE POOL EMERALD
|
G. Brown,
J. Snow
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443
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|
BAMBOO CORAL
|
G. Brown
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449
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|
GEM TOURMALINE ON KANGAROO ISLAND
|
J.L. Keeling,
I.J. Townsend
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455
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GEMS AROUND AUSTRALIA
|
H. Bracewell
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459
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GEMMOLOGY STUDY CLUB LAB REPORTS
|
|
464
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|
THE GEMSTONES OF PAKISTAN
|
R.J. Thompson
|
471
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|
GOLD CORAL RE-EVALUATED
|
G. Brown
|
473
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|
SPECULAR HEAT-TREATED GARNET
|
D. Friedman
|
477
|
|
THE POOL EMERALD BROCHURE
|
Editor
|
478
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to Abstract Index
|