A device to facilitate the measurement of birefringence in gemstonesFARRIMOND, T.1994, Vol 24, Num 2, pp 105-108, issn 0375-6734Article

Observations of red beryl crystals from the Wah Wah mountains, UtahHOSAKA, M; TUBOKAWA, K; HATUSHIKA, T et al.1993, Vol 23, Num 7, pp 409-411, issn 0375-6734Article

Radiation-induced colour change in natural and synthetic emeraldSCHMETZER, K.1993, Vol 23, Num 5, pp 288-293, issn 0375-6734Article

Towards a mathematical gemmology. Thinking in terms of ratios makes a differenceSCHELL, M.A.1993, Vol 23, Num 7, pp 422-426, issn 0375-6734Article

Gemmological properties of Type Ia diamonds with an unusually high hydrogen contentFRITSCH, E; SCARRATT, K.1993, Vol 23, Num 6, pp 451-460, issn 0375-6734Article

Vanadian grossular garnet (tsavorite) from PakistanJACKSON, B.1992, Vol 23, Num 2, pp 67-70, issn 0375-6734Article

Emeralds from Colombia (Part 1)BOSSHART, G.1991, Vol 22, Num 6, pp 355-361, issn 0375-6734, 7 p.Article

The microscopic determination of structural properties for the characterization of optical uniaxial natural and synthetic gemstones. Part I: general considerations and description of the methodsKIEFERT, L; SCHMETZER, K.1991, Vol 22, Num 6, pp 344-354, issn 0375-6734, 11 p.Article

Crystallized and massive rose quartz deposits in BrazilCASSEDANNE, J.P; RODITI, M.1991, Vol 22, Num 5, pp 273-297, issn 0375-6734Article

The growth of rubies in south-east Kenya = Genèse de rubis dans le Sud-Est du KenyaKEY, R.M; OCHIENG, J.O.1991, Vol 22, Num 8, pp 484-496, issn 0375-6734Article

Two types of historical traps : on Diamond Softening and the Antiquity of Emerald OilingNASSAU, K.1991, Vol 22, Num 7, pp 399-403, issn 0375-6734Article

Gemmological visual aids = Aides visuelles en gemmologieEADIE, J.1990, Vol 22, Num 4, pp 207-209, issn 0375-6734, 3 p.Article

Iridescent natural glass from Mexico = Verre naturel iridescent du MexiqueHANNI, H.A.1989, Vol 21, Num 8, pp 488-495, issn 0375-6734Article

Emerald-coloured rough = Une émeraude grossièrement coloréeSMITH, D.J.1988, Vol 21, Num 1, pp 28-29, issn 0375-6734Article

Gemmological investigation of a large faceted eat African enstatite = Etude gemmologique d'une enstatite de Tanzanie à grandes facettesKOIVULA, J.I; FRYER, C.W; SHIGLEY, J.E et al.1988, Vol 21, Num 2, pp 92-94, issn 0375-6734Article

Investigation of cat's-eye zircons from Sri Lanka = Etude sur les zircons oeil de chat de Sri LankaGUNAWARDENE, M; GUNAWARDENE, M.GUNAWARDENE, M; GUNAWARDENE, M.1988, Vol 21, Num 2, pp 88-91, issn 0375-6734Article

Observations on turquoise, lapis-lazuli and coral, and some of their simulants = Observations sur la turquoise, le lapis-lazuli et le corail, et quelques-unes de leurs imitationsTAKI, S; HOSAKA, M.1988, Vol 21, Num 2, pp 74-80, issn 0375-6734Article

Violet emeralds ? = Des émeraudes violettes ?SCHRADER, H.-W.1988, Vol 21, Num 4, pp 237-251, issn 0375-6734Article

Investigation of a sapphire cat's-eye from Burma = Etude sur un saphir à oeil de chat de BirmanieSCHMETZER, K; KIEFERT, L.1987, Vol 20, Num 6, pp 346-349, issn 0375-6734Article

On the colour of gemstones and Nelson's body colour = Sur la couleur des gemmes et la couleur de fond de NelsonNASSAU, K.1987, Vol 20, Num 6, pp 350-351, issn 0375-6734Article

On the inclusions in emeralds from Santa Terezinha de Goias, Brazil = Sur les inclusions des émeraudes de Santa Terezinha de Goias, BrésilMIYATA, T; HOSAKA, M; CHIKAYAMA, A et al.1987, Vol 20, Num 6, pp 377-379, issn 0375-6734Article

Some unusual cat's-eyes -2 = Quelques oeils-de-chat inhabituels - 2ITO, Y.1987, Vol 20, Num 5, pp 292-293, issn 0375-6734Article

Blue and yellow sapphire from Kaduna Province, Nigeria = Les saphirs bleus et jaunes de la province de Kaduna, NigeriaKIEFERT, L; SCHMETZER, K.1987, Vol 20, Num 7-8, pp 417-442, issn 0375-6734Article

Blue spinel from the Hunza valley, Pakistan = Les spinelles bleus de la vallée de Hunza, pakistanHARDING, R.R; WALL, F.1987, Vol 20, Num 7-8, pp 403-405, issn 0375-6734Article

A re-investigation of gahnospinels from Sri Lanka = Nouvelle étude sur les gahnospinelles de Sri LankaSCHMETZER, K; BANK, H.1986, Vol 20, Num 3, pp 157-160, issn 0375-6734Article