References and links


Bibliographic references


  • Gómez-Fernández F., Both R.A., Mangas J. and Arribas A. Metallogenesis of Zn-Pb Carbonate-Hosted Mineralization in the Southeastern Region of the Picos de Europa (Central Northern Spain) Province: Geologic, Fluid Inclusion, and Stable Isotope Studies. Economic Geology, 2000, Vol. 95, no. 1, pp. 19-40.  
  • Sapalski Roselló C. and Gómez-Fernández F. “Boletín del Instituto Gemológico Español”, June 1992.






   Sphalerite info


   Custom cut websites

   (if you have a custom cut website and you are interested in link exchange please contact us)


   Other links




Acknowledgments - our greatest thanks to:


  • The authors of the cited publications on Spanish sphalerite used in our website.
  • Eneida Kwetkus Castañón for her help with the revision of English language at this site.
  • Juan Cózar Cuello for pictures of the Picos de Europa National Park and Aliva mine.
  • Manuel Moreno, faceting instructor at IGE for his fantastic course.
  • Josep Mª Serrano and Montse Bagué for their introduction to meetpoint faceting.
  • Gemologyonline forum and "Lapidary Corner" participants for all their useful advices for faceting.
  • All the authors of faceting designs published on the Internet and used to cut our stones.