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Volume 15,
February 1983 - November 1985
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Volume 15, Number 1, February 1983
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INVITATION TO HOBART
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P. Hickman
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2
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ELUCIDATING THE OPTICAL THEORY OF CHATOYANCY
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A. Wuthrich,
M. Weibel,
E. Gubelin
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3
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HARTS RANGE HESSONITE.
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H. Bracewell,
G. Brown
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6
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PRECIOUS OPAL FROM NEW ZEALAND
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R.A. Ball
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12
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SEISMIC GEM PROSPECTING
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G. Pearson
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17
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A NEW SYNTHETIC EMERALD
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G.A. Tombs
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24
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Volume 15, Number 2, May 1983
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RHINOCEROS
HORN
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G. Brown
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38
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IRRADIATION OF SPODUMENE
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G. Pearson
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45
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AZURITE FROM THE ECLIPSE MINE
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A. D. Robertson
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46
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GUTTA-PERCHA
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G. Brown,
A. J. Moule
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50
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MT ISA IOLITE
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G. Brown,
H. Bracewell
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53
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THE REGENCY™ SYNTHETIC EMERALD
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G. Brown,
J. Snow
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57
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Volume 15, Number 3, August
1983
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CERTIFICATION OF OPAL
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G. Sherman
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71
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A PROPOSAL FOR THE CLASSICICATION OF OPALS
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J.V. Sanders
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75
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THE ASSESSMENT OF GEMSTONE COLOURS
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G. Brown
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81
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THE QUANTITATIVE EVALUATION OF THE COLOUR OF
DIAMONDS: Abstract
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Journal of the Gemmological Society of Japan
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91
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Volume 15, Number 4, November 1983
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TWENTY-FIVE YEARS ON
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J.R. Holdsworth
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103
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DIRECT X-RADIOGRAPHY OF PEARLS
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G. Brown
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105
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DIAMOND GRADING SYSTEM FOUNDATIONS AND COMPARISONS
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G. Tombs
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124
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The KYOWA GR1 GEMMOLOGICAL REFRACTOMETER
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Instrument Evaluation Committee
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130
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Volume 15, Number 5, February 1984
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THE DIAMOND INDUSTRY
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J.E. Roux
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143
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INCLUSIONS IN SYNTHETIC CORUNDUM BY CHATHAM
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G. Brown
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149
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AN UNUSUAL CULTURED PEARL NECKLACE
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Gemmology Study Club Report
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155
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BITS & PIECES
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Instrument Evaluation Committee
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158
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NEGATIVE INCLUSIONS IN ZIRCON FROM ANAKIE
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A.D. Robertson
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164
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INCLUSIONS IN BIRON™ SYNTHETIC EMERALDS
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G. Brown,
J. Snow
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167
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Volume 15, Number 6, May 1984
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EXPERIMENTAL PEARL RADIOGRAPHY
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G. Brown, N. Wainwright-Smith
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182
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TURQUO1SE OR CHRYSOCOLLA FROM THE JERVOIS AREA
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H. Bracewell,
G. Brown
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189
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THE SEWARD GEMMOLOGICAL MICROSCOPE
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G. Brown
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196
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NATIONAL FF-393E LIGHT SCOPE
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Instrument Evaluation Committee
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197
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A SCRIMSHAW IMITATION
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N. Clayton,
G. Brown,
J. Snow
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201
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KORITE™
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G. Brown
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206
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Volume 15, Number 7, August 1984
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THE AUSTRALIAN IDEAL DESIGN FOR ROUND BRILLIANTS
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M. Connellan,
L. Pozzibon
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219
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EMERALD FROM THE KITWE DISTRICT ZAMBIA
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G. Graziani,
E. Cubelin,
S. Lucchesi
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227
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MINERAL INCLUSIONS IN ZAMBIAN EMERALDS
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J.I. Koivula
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235
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STONES SEEN - MYSTERY CABOCHONS
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D. Sandeman
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240
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CHRYSOBERYLS FROM ANAKIE
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R. Brightman
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241
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Volume 15, Number 8, November 1984
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LED REFRACTOMETER LIGHT SOURCES
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Instrument Evaluation Committee
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255
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FACETABLE PREHNITE
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Gemmology Study Club
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258
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THE SNOW GEMMOLOGICAL SPECTROSCOPE
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Instrument Evaluation Committee
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259
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HARTS RANGE SUNSTONE
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G. Brown,
H. Bracewell
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263
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ALEXANDRITE-CHRYSOBERYL FROM ZIMBABWE
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Gemmology Study Club
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275
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SURFACE REPAIRED RUBIES
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R.W. Hughes
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279
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TWO NEW THERMAL TESTERS
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Instrument Evaluation Committee
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281
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Volume 15, Number 9, February 1985
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ASTERISM: THE GREAT ENIGMA
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M. Connellan,
I. Pozzebon
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295
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RECORDING GEMSTONE ABSORPTION SPECTRA
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Instrument Evaluation Committee
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297
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BLACK OPAL: A BRIEF REVIEW
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R.A. Ball
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310
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SYNTHETIC OR IMITATION
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G. Brown
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319
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RED Hi-SUPER BRIGHT LED REFRACTOMETER LIGHT SOURCE
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J. Snow,
G. Brown
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322
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Volume 15, Number 10,
May
1985
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PROPERTIES OF ORNAMENTAL STONES AND THEIR GEMMOLOGICAL IDENTIFICATION -
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E. Gubelin
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Tables
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1. The Hardness Scale
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337
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2. Streak Colours
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338
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3. Absorption Spectra
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342
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4. Fluorescence Colours
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344
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5. The Becke Line Test
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347
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6. The Identification Tables arranged in Colour Groupings
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348
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7. Cryptocrystalline Quartz Varieties
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382
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8. Serpentine group Properties
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386
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Volume 15, Number 11,
August
1985
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ASTERISM
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A.R. Moon,
M.R. Phillips
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395
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ABALONE & ITS PEARLS
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G. Brown
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400
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AMAZONITE FROM SOUTH AUSTRALIA
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H. Bracewell,
G. Brown
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404
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BUSH AMETHYST
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G. Pearson
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408
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NAKAZUMI STAR CORUNDUM
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J. Snow,
J. Sanders,
G. Brown
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410
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IDENTIFYING GILSON'S LAPIDARY MATERIALS
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G. Brown
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413
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SEIKO SYNTHETICS
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Editor
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418
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AUSTRALIAN IDEAL DESIGN:
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Comments by
G. & M. Vargas
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421
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Volume 15, Number 12, November 1985
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ROLE OF WATER IN CRACKING OF OPAL
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Grant Pearson
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435
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JADE
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G. Tombs
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445
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SOME INFORMATION ON THE KASHMIR SAPPHIRE
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Gemmology Study Club
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448
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ANGLES
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E.T. Steller
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450
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GREEN DYED 'CRACKLED' BERYL
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Gemmology Study Club
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454
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LED REFRACTOMETER KIT RELITE REFRACTOMETER LIGHT SOURCE
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Instrument Evaluation Committee
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456
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NUMMITE
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O. Dragsted
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461
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DISTINCTION OF NATURAL AND SYNTHETIC AMETHYSTS
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Th. Lind,
K. Schmetzer,
H. Bank
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462
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INDEX - ORNAMENTAL STONES AND THEIR GEMMOLOGICAL IDENTIFICATION i-iv
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Return
to Abstract Index
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