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
Gold
Gold leaf
Gold nugget
Gold on quartz
Gypsum
Hemimorphite
Kyanite after andalusite
Kyanite with biotite
Lawsonite
Manganoan calcite
Marcasite
Merwinite
Microcline (var. amazonite)
Millerite
Millerite
Millerite with hematite and quartz
Missouri River Sapphires
Opal bone
Opal replacing wood
Peridot in Basalt
Prehnite
Pyromorphite
Pyrophyllite
Quartz (var. agate)
Quartz (var. agate)
Quartz (var. agate)
Quartz (var. agate)
Quartz (var. agate)
Quartz (var. amethyst)
Quartz (var. amethyst)
Quartz (var. landscape agate)
Quartz (var. smoky quartz) with microcline
Rhodochrosite
Rock Creek Sapphires
Roebling Opal
Smithsonite
Pagination
First page
First
Previous page
Previous
Page
1
Current page
2
Page
3
Next page
Next
Last page
Last
Home
Smithsonian Institution
Terms of Use
Privacy Policy
Host an Event
Jobs
Press
Blog
Contact Us