Two-phase inclusions in sapphire, Sri Lanka
Fire opal, Mexico
Two-phase inclusion in amethyst, Brazil
Inclusions of rutile (dark crystal and fine needles) and clusters of zircon grains in umbalite garnet, Tanzania
Inclusions of anatase crystal and rutile fibres in rock crystal from Brazil
Stress fissure («sun spangle») in baltic amber
Inclusion of apatite in ruby from Tanzania
Fluid inclusions in quartz with bituminous daughter minerals, China

Contact

Swiss Gemmological Society
Secretary:  Rébecca Michelot
c/o BDO AG, Hodlerstrasse 5, 3001 Bern

T. +41 79 668 6989
E. info@gemmologie.ch