Free USGS topo maps for the entire United States
The U.S. Department of the Interior’s BUREAU OF LAND MANAGEMENT -learn where to go, how, and why
The USGS provides science about the natural hazards that threaten lives and livelihoods; the water, energy, minerals, and other natural resources we rely on; the health of our ecosystems and environment; and the impacts of climate and land-use change. Their scientists develop new methods and tools to supply timely, relevant, and useful information about the Earth and its processes.
The Anza-Borrego Desert Paleontology Society, as an entity under the direction of the Colorado Desert District (CDD), Anza-Borrego Desert State Park (ABDSP), is an organization where volunteer researchers develop the knowledge and skills needed to build, support and maintain an internationally significant paleontology program. It ensures that members can participate actively and responsibly in discovering, protecting, preserving and interpreting the fossil resources from the ancient past in this unique environment.
A Tradition of Science and Education – Established in 1931, GIA is the world’s foremost authority on diamonds, colored stones, and pearls. A public benefit, nonprofit institute, GIA is the leading source of knowledge, standards, and education in gems and jewelry. Located in Carlsbad, CA.
THE AMERICAN OPAL SOCIETY– promoting the interest and knowledge of Opals
GEM CUTTERS DOT ORG – a lapidary resource and guide
MINDAT.ORG is a non-commercial online mineralogical database, claiming to be the largest mineral database and mineralogical reference website on the internet. It is used by professional mineralogists and amateur mineral collectors alike and boasts over 45k mineral names and half a million photos.
The mission of the Natural History Museum of Los Angeles County is to inspire wonder, discovery, and responsibility for our natural and cultural worlds.
The Natural History Museum of Los Angeles County
- protects over 35 million specimens, dating back 4.5 billion years.
- is a resource for Southern California teachers.
- is an authority on the “big picture” of the planet, the natural and the cultural world.
- tracks the Earth’s biodiversity, because knowing what is out there is the first step to conservation.