Agates of Lake Superior: Stunning Varieties and How They Are Formed Aventurine Rough Rock

Rough Rock

or an almost hickoryite orange and yellow swirl

and tips on how to find and identify agates and where to look for them

By: Judy Hall

A-grade Carnelian Agate 1 lb lot tumbled from Brazil

Agates of Lake Superior: Stunning Varieties and How They Are Formed Aventurine Rough RockAgates of Lake Superior: Stunning Varieties and How They Are Formed By: Dan and Bob Lynch Each type of the Lake Superior region's agates are discussed in depth, with details ranging from characteristics and formation to distribution and rarity. Multiple photographs accompany each write up. Also includes a thorough explanation of agates and why they are unique, a critical look at agate formation theories, and tips on how to find and identify agates and