Minerals & Gemstones
Mineral Picture Index
This page links to pictures of more than 100 different minerals, plus more than 20 special picture galleries.
Mineral Pictures A to Z
A-to-Z list of every mineral shown on this site.
"Learn Your Minerals" Email Course
Let me show you systematically how to study and identify minerals in six weekly installments. Please enter your email address carefully.
Official State Gems of the United States
Thirty-five states have named official gemstones. Here they are, listed by state.
Gallery of the State Gemstones
The 27 official gemstones of 35 states.
Official State Minerals of the United States
Nineteen states have named 17 different official minerals. Here they are.
Gemstones to Minerals, Minerals to Gemstones
Mineral names and their corresponding gemstone names.
What Is a Mineral?
Minerals meet four criteria, more or less strict.
How to Identify Minerals
First steps in learning to identify minerals.
Are My Minerals Valuable?
Sometimes there really is treasure in the back yard.
Some natural minerals have a special role in this industry.
Gems on the Web
An introduction to the gem world and those who inhabit it.
Geo-Quiz 2: Minerals
Go ahead and attempt this challenging quiz: it demands a crystal clear, many-faceted brain.
Geo-Quiz 15: Ores
What might "Who Wants to Be a Millionaire" look like if there were only questions about materials we mine to meet society's needs?
Dietary Minerals and Real Minerals
Why can't we get our dietary minerals from real minerals?