Colour varieties of gems: where to set the boundary
Author(s) : -
Date : 2020
Colour varieties of gems: where to set the boundary? Published in InColor, 2020 Winter, 45, 92-95.
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Tag : Colour
Study of a recut HPHT synthetic diamond: colour vs size vs SWUV transmission
Author(s) : -
Date : 2019
Presentation by Jean-Pierre Chalain at the International Gemmological Conference (IGC) in August 2019.
Blue-green emerald from Nigeria (a consideration of terminology)
Author(s) : -
Date : 1992
Blue-green emerald from Nigeria (a consideration of terminology). Published in Australian Gemmologist, 1992.
Author(s): H.A. Haenni