Volume 24 / No. 1 / 1994
Volume 24 No. 1. January 1994 The Journal of Gemmology The Gemmological Association and Gem Testing Laboratory of Great Britain OFFICERS AND COUNCIL Past Presidents: Sir Henry Miers, MA, D.Sc, FRS Sir William Bragg, OM, KBE, FRS Dr. G.F. Herbert Smith, CBE, MA, D.Sc. Sir Lawrence Bragg, CH, OBE, MC, B.Sc, FRS Sir Frank Claringbull, Ph.D., F.Inst.P., FGS Vice-Presidents: R. K. Mitchell A.E. Farn D.G. Kent E. M. Bruton Council of Management C.R. Cavey T.J. Davidson N.W. Deeks E.C. Emms I. Thomson V.P. Watson R.R. Harding Members' Council A. J. Allnutt J. Kessler R. Shepherd P. J. E.Daly G. Monnickendam R. Velden P. Dwyer-Hickey L. Music D. Warren R. Fuller, J.B. Nelson CH. Winter B. Jackson P. G. Read G.H. Jones I. Roberts Branch Chairmen: Midlands Branch: D.M. Larcher, North-West Branch: I. Knight Examiners: A. J. Allnutt, M.Sc, Ph.D., FGA G. H. Jones, B.Sc, Ph.D., FGA L. Bartlett, B.Sc, M.Phil., FGA, DGA D. G. Kent, FGA E. M. Bruton, FGA, DGA R. D. Ross, B.Sc, FGA C. R. Cavey, FGA P. Sadler, B.Sc, FGS, FGA, DGA S. Coelho, B.Sc, FGA, DGA E. Stern, FGA, DGA A.T. Collins, B.Sc, Ph.D Prof. I.Sunagawa, D.Sc. B. Jackson, FGA M. Tilley, GG, FGA E. A. Jobbins, B.Sc, C. Eng., FIMM, FGA C. Woodward, B.Sc, FGA, DGA Editor: E. A. Jobbins Production Editor: Mary A. Burland The Gemmological Association and Gem Testing Laboratory of Great Britain 27 Greville Street, London EC1N 8SU Telephone: 071-404 3334 Fax: 071-404 8843 TheJournal of Gemmology VOLUME 24 NUMBER ONE JANUARY 1994 Cover Picture Ruby crystals from Mong Hsu, Myanmar (Burma): the terminated crystal (9mm high) is not heat treated.
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