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Volume 14,
February 1980 - November 1982
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Volume 14, Number 1, February 1980
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PLEOCHROSCOPES - Their Theoretical and Practical Application to Gemmology
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J.B. Taylor
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3
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CORALLIUM PRECIOUS CORALS (Part Two)
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G. Brown
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14
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Volume 14, Number 2, May 1980
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AN EVALUATION OF THE DIPRO™ DIAMOND TESTING PROBE
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G. Brown,
J. Snow,
B. Taylor
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3
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MODERN METHODS OF GEMSTONE COLOURATION
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Ivan Mumme
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10
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THE DETERMINATION OF MAXIMUM AND MINIMUM
REFRACTIVE INDICES OF A GEMSTONE
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W.M. Thompson
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13
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THE OPAL - GEM OF MYSTERY
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18
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Volume 14, Number 3, August
1980
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INCLUSIONS IN N.S.W. GEMSTONES
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E. L. Stevens
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23
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GILL'S INDEX
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E. Gubelin
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27
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THE RADIOGRAPHIC FEATURES OF 'KIESH'I PEARLS
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G. Brown
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28
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NATURAL AND MAN INDUCED IRRADIATION OF DIAMOND - POSSIBLE IDENTIFICATION BETWEEN IRRADIATION TYPES
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G. Tombs
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30
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THE INTERNATIONAL GEMMOLOGICAL CONFERENCE
- IDAR-OBERSTEIN
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G. Tombs
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32
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AN EXAMINATION OF A CLAM PEARL
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G. Brown
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38
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AN EVALUATION OF THE GEM INSTRUMENT CORPORATION'S
GEM DIAMOND PEN
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G. Brown
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42
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THERMAL CONDUCTION IN GEMSTONES.
PART 1: OSCILLATIONS INDUCED BY DRY ICE
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R. Thwaites,
J. James,
S. Goldsmid
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47
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THERMAL CONDUCTION IN GEMSTONES
PART 2: A SIMPLE THERMAL COMPARATOR
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H. J. Goldsmid,
S.E. Goldsmid
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49
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Volume 14, Number 4, November 1980
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NEPHRITE JADE FROM COWELL, SOUTH AUSTRALIA
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R.A. Ball
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53
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METAMORPHIC PROCESSES IN GEMSTONE FORMATION
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A. F. Wilson
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57
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FURTHER THOUGHTS AND QUESTIONS ON AUSTRALIAN SAPPHIRES, THE COMPOSITION AND TREATEMENT
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G. Tombs
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64
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KRUSS PORTABLE MICROSCOPE
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G. Brown,
J Snow
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69
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AN EVALUATION OF BATTERY POWERED LIGHT SOURCES FOR HAND LENSES
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G. Brown,
J. Snow
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73
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AN ATTEMPT TO ASSESS THE RECENT POPULARITY OF DIFFERENT GEMS
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J.N. Butler
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77
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Volume 14, Number 5, February 1981
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HOW IT WORKS: THE STOTT DICHROSCOPE
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C.R. Stott
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85
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STONES SEEN
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86
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MAGNETIC RESONANCE DISTINCTION BETWEEN SYNTHETIC AND NATURAL BLUE SAPPHIRE
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C.O. Anderson,
D.R. Hutton
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87
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AN EVALUATION OF THE SNOW POCKET POLARISCOPE
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G. Brown
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90
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EXAMINATION OF A PREHNITE CAT’s EYE
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G. Brown,
J. Snow
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93
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AN EVALUATION OF THE SNOW DICHROSCOPE
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G. Brown
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97
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EXAMINATION OF TEO IIMORI IMITATIONS
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G. Brown,
J. Snow
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100
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MAN-MADE GEMS – WHAT’S NEXT
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M. O’Donoghue
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106
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Volume 14, Number 6, May 1981
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WHERE HAVE ALL OUR ANSWERS GONE? OR LET ME INTRODUCE YOU TO GILL'S 1NDEX
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J.O.Gill
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117
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AN EVALUATION OF THE GEMLUSTAÔ REFLECTOMETER
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Instrument Evaluation Committee
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120
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CHRYSOCOLLA - A LITTLE KNOWN GEMSTONE
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A.D. Robertson
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127
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EXAMINATION OF A FOSSIL PEARL
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G. Brown
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131
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SOME OBSERVATIONS OF GOLDSTONE
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G. Brown,
J. Snow
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139
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THE DETERMINATION OF THE MAXIMUM AND
MINIMUM REFRACTIVE INDICES OF A GEMSTONE (continued)
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W.H. Thompson
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143
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Volume 14, Number 7, August 1981
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EDITORIAL
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THE BIWA PEARL
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G. Brown
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153
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REFLECTIONS ON THE USE OF THE HAND SPECTROSCOPE
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G.M. Pearson
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157
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STONES SEEN: Amber Inclusion
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160
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JELLY OPAL FROM WHITE CLIFFS
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J.V. Sanders
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161
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COMPUTERS AND GEMMOLOGY
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E.N. Barrington
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166
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AN EVALUATION OF THE PRESIDIUM™ GEM TESTER
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G. Brown,
B. Taylor,
J. Snow
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176
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Volume 14, Number 8, November 1981
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SO YOU THINK YOU HAVE A NEW MINERAL!
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E.H. Nickel
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181
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THE BIWA PEARL: PART 2
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G. Brown
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186
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DETERMINATION OF REFRACTIVE INDICES
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H.C. Wickett
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194
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THE MODEL C1400X GEMLUSTA REFLECTOMETER
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B. Taylor,
G. Brown,
J. Snow
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196
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SWUV DIAPHANY OF RUBY
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G. Brown
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200
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GOLDEN CORALS: A BRIEF NOTE
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G. Brown
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204
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Volume 14, Number 9, February 1982
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NEW SYNTHETIC OPAL MADE OF PLASTICS
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N. Horiuchi
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213
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"STAR" DIAMOND
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P. Humble
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219
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THE GOLDEN JUBILEE OF THE G.A.G.B
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P.B. Lapworth
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220
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THREE BRIEF EVALUATIONS
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G. Brown,
J. Snow
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223
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WHITE NEPHRITE
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R.A. Ball,
I. Hennessy
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228
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CATHAYSTONE™ CAT'S-EYE
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Gemmology Study Club
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230
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THE HAND LENS
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J.J. Snow
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233
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Volume 14, Number 10,
May
1982
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CHUDLEIGH PARK PERIDOT
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G. Brown,
H. Bracewell
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253
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THE PORTALAB™
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Instrument Evaluation Committee
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258
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EXAMINATION OF A CAT'S-EYE IOLITE
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Gemmology Study Club
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264
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FURTHER STUDIES ON IRIDESCENCE OF MARINE SHELLS
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R.A. Ball
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266
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AN INTERESTING AMBER IMITATION
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G. Brown
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272
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LEICHLEITNER COATED BERYL INCLUSIONS
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G.Brown
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274
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Volume 14, Number 11,
August
1982
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THE GENESIS OF NOBLE METAL NUGGETS
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A.F. Wilson
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285
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IDENTIFYING TURQUOISE
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G. Brown
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289
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SURFACE TOPOGRAPHY OF GEM CRYSTALS
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R.F. Brightman
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301
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COMMON OPAL AND POTCH OPAL
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R.A. Ball
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305
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THE AIGS MASTER VIEWER
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Instrument Evaluation Committee
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311
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Volume 14, Number 12, November 1982
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STONES SEEN - VIRIDINE WITH A LOW R.I.
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R.F. Brightman
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322
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HONEY OPAL
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R.A. Ball
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324
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MT. SURPRISE TOPAZ
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G. Brown
H Bracewell,
S M.B. Kelly
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326
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EXAMINATION OF AN UNUSUAL ITEM OF 'NATIVE' JEWELLERY
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G. Brown,
J. Snow,
D. Lund
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334
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THE QUARTZ MINERALS OF THE REDCLIFFE PENINSULA
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J.N. Butler
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338
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A NEW SYNTHETIC EMERALD
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P.J. Darragh,
M.J. Willing
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344
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MORE SYNTHETIC OPAL
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G.A. Tombs,
W.J. Joris
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345
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THE APPROPRIATE IRON CONTENT OF SOME SAPPHIRES
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G. Pearson
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347
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Return
to Abstract Index
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