Agate from Reichweiler, Germany

Partially etched diamond crystal

Inclusions of anatase crystal and rutile fibres in rock crystal from Brazil

Inclusions of rock crystal and rutile needles in quartz, Brazil, polarised light

Stress fissure («sun spangle») in baltic amber

Agate from Anzi, Maroc

Natural etching structure on a crystal face of diamond (trigons), polarised light

Epigenetic inclusion (probanly melanterite) in quartz, Brazil, parallel polarisers

Impressum

Anbieter dieser Website ist:

Schweizerische Gemmologische Gesellschaft
Schmiedenplatz 5
Postfach 258
3000 Bern 7

T. +41 31 329 20 72
F. +41 31 329 20 75
E. nfgmmlgch

Web development: Gecko Media

Sitemap
Impressum
Datenschutz
Nutzungsbedingungen

© SGG/SSG 2022