Skip to main content
Smithsonian Institution
Main Menu
Visit
Exhibits
Research
Education
Events
About
Join us
Donate
Search
Search
Close
Smithsonian National Museum of Natural History
GeoGallery
Breadcrumb
Home
GeoGallery
Arkose
Attaway Ametrine
Augen gneiss block
Basaltic cinder
Bismuth
Dyber Ametrine
Fluorite
Fluorites
Hemimorphite
Johnstown
Manganoan calcite
Microcline
Microcline (var. amazonite)
Migmatite
Millerite
Opal
Opal
Opal replacing wood
Paravauxite
Phosphophyllite
Pyromorphite
Quartz (var. agate)
Quartz (var. ametrine)
Quartz (var. smoky quartz) with microcline
Quartz Gems
Rhodochrosite
Southwest Sunset
Star quartz
Vivianite with pyrite
Zircon (var. cyrtolite)
Home
Smithsonian Institution
Terms of Use
Privacy Policy
Host an Event
Jobs
Press
Blog
Contact Us