Colour zoning in ruby from Mong-Shu, Burma
Two-phase inclusions in sapphire, Sri Lanka
Dumortierite in rock crystal, Brazil, polarised light
Inclusions of anatase crystal and rutile fibres in rock crystal from Brazil
Dendrites in agate
Fire opal, Mexico
Spinel crystal in dolomite marble, Burma
Epigenetic inclusion (probanly melanterite) in quartz, Brazil, parallel polarisers

Swiss Gemmological Society

Committee

Name Telephone Fax
President Martin Julier +41 41 360 56 58
Vice President Andri Letta +41 81 750 56 56
Secretary Willy Bieri +41 78 696 19 81
Cashier Hans-Ulrich Demuth +41 44 211 50 91
President of the Scientific Commission Michael Hügi +41 58 462 93 16 +41 31 952 73 30

Scientific Commission

Name Telephone Fax
President Michael Hügi +41 58 462 93 16 +41 31 952 73 30
Member Dr. Thomas Hainschwang +42 32 62 24 64
Member Hans Pfister +41 22 810 05 40‬
Member Dr. Michael S. Krzemnicki +41 61 262 06 40 +41 61 262 06 41
Representative CIBJO Adrian Meister +41 44 221 27 27 +41 44 212 52 24

Material Management, Archives

Name Telephone Fax
Material Management, Archives Balz Blumer +41 44 487 91 00 +41 44 487 91 01

Regional Group Leaders

Name

 Telephone Fax
Group 1 Suisse romande, 22M

Rébecca Michelot

 +41 79 668 69 89
Group 2 Berne, 15 M

Verena Römer

 +41 31 311 81 10
Group 3 Basel / Solothurn / Aarau and Group 4 Central Switzerland, 23 M

Natalya Hermenau

 +41 76 521 66 52
Group 5 Zurich, 27 M

Teresa Sarta

 +41 44 219 77 77 +41 44 219 77 78
Group 6 East Switzerland, 13 M

Nicola Cemin

 +41 71 988 10 65
Group 7 Ticino, 7 M

Claudio Messi

 +41 91 923 51 37 + 41 91 923 23 10

Honorary Members

Prof. Dr. Max Weibel, Zürich
Prof. Dr. Henry A. Hänni