Quartz

Karampelas S., Fritsch E., Zorba T., Paraskevopoulos K.M., Sklavounos S. (2007) An update on the separation of natural from synthetic amethysts. Bulletin of the Geological Society of Greece, Vol. 27

Karampelas S., Fritsch E., Zorba T., Paraskevopoulos K.M., Sklavounos S., (2006) A refined infrared-based criterion for successfully separating natural from synthetic amethyst. Gems & Gemology, Vol. 42, No. 3, pp.155-156

Rondeau B. (2006) Letter to the Editor: More about Medusa quartz. Gems & Gemology, vol. 42, n°2, p. 97.

Karampelas S., Fritsch E., Zorba T., Paraskevopoulos K.M., Sklavounos S. (2005) Distinguishing natural from synthetic amethysts : the presence and true shape of the 3595 cm-1 peak. Mineralogy and Petrology, Vol. 85, pp. 45-52.

Rondeau B., Macri M., Fritsch E. (2005) Gem News International:  „Medusa quartz“ with gilalite inclusions. Gems & Gemology, vol. 41, n°3, pp. 271-272.

Hyrsl J., Danet F. Fritsch E. (2005) Gem News International: Bismuthinite inclusions in rose quartz from Madagascar. Gems & Gemology, vol. 41, n°2, pp. 181-182.

Karampelas S., Fritsch E. (2004) Infrared absorption as a useful tool to separate natural from synthetic amethysts. Proc. Mitt. Osterr. Mineral. Ges. , 149

Balitsky V.S., Makhina I.B., Prygov V.I., Mar’in A.A., Emel’chenko A.G., Fritsch E., McClure S.M., Lu T., DeGhionno D., Koivula J.I., Shigley J.E. (1998) Russian synthetic pink quartz. Gems & Gemology, Vol. 34, No. 1, pp. 34-43.

Balitsky V.S., Makhina I.B., Emel’chenko A.G., Mar’in A.A., Shigley J., Fritsch E.,Koivula J. (1996) Formation of rose phosphorus-bearing quartz and causes of its rarity nature: an experimental study (en russe). Geochimiya, No. 11, pp. 1074-1081.

Fritsch E., McClure S.F. (1995) Synthetic amethyst: Features of new type from Russia. Jewellery News Asia, No. 129, pp. 90-92.

Koivula J.I., Fritsch E. (1989) The growth of Brazil-twinned synthetic quartz and the potential for synthetic amethyst twinned on the Brazil law. Gems & Gemology, Vol. 25, No. 3, pp. 159-164.

Fritsch E., Koivula J.I. (1988) How to tell natural amethyst. Jewelers' Circular Keystone, October 1988, pp. 244-248.

Fritsch E., Koivula J.I. (1987) How to tell if that amethyst is natural. Jewelers’ Circular-Keystone, July 1987, pp. 323-324.

Informations supplémentaires