Agate
State Gemstones of the United States
Agate is the state gem of Louisiana, Maryland, Minnesota, Montana, Nebraska and North Dakota making it by far the most popular state gemstone (and state rock).
Photo courtesy Julie Falk of flickr under Creative Commons license
Replated Topics
List of Official State GemsOfficial State Minerals of the United StatesOfficial State Rocks of the United States
About Gemstones
Introducing GemstonesGemstones and Their Mineral Names10 Gemstone Special Optical Effects
From the About.com Jewelry Guide
Gemstone Buying AdviceGemstone TreatmentsSynthetic Gemstones
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