Like other fresh water pearls, Indiana pearl can be used in jewelry.
Obsidian is also found in Indiana. Obsidian is a natural glass.
State Stone: Limestone
Limestone was adopted as Indiana's State Stone in 1971.
Useful Books & Bibliography:
- Camper's Guide to Indiana & Ohio Parks, Lakes, and Forests : Where to Go and How to Get There - by Mickey Little
A guide to parks throughout Indiana. Great for day trips.
- Gem Identification Made Easy: A Hands-On Guide to More Confident Buying & Selling New 3rd Edition - by Antoinette L. Matlins & Antonio C. Bonanno
This book is really great for knowing he latest gems, synthetics, treatments, and instruments. Easy to use.
- Gemstone Buying Guide: A Guide to Buying - by Renee Newman
Very nice gemstone identification book.
- Simon and Schuster's Guide to Gems and Precious Stones - by C. Ciprianai, Kennie Lyman (Editor), Alessando Borelli
This book is one inch thick and every facing page has a full colored photo of gems or precious stones. Hardness, weights, cuts, refractions, and value of color are given for each gem.
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