Bubbles and swirls in moldavite (natural glass)
Two-Phase inclusions and rutile needles in rock crystal from Brazil
Inclusions of chrysotile fibres in demantoide garnet from Ural Mountains, Russia
Agate from Reichweiler, Germany
Fire opal, Mexico
Inclusions of rock crystal and rutile needles in quartz, Brazil, polarised light
Stress fissure («sun spangle») in baltic amber
Colour zoning in ruby from Mong-Shu, Burma


Società Gemmologica Svizzera
Segretariato : Willy Bieri

c/o Willy Bieri, Feldgass 34, 6170 Schüpfheim

T. +41 78 696 19 81
E. nfgmmlgch