Ask An Expert

Do you have a rock (or rocks) you’d like to have identified? Use the form to send a photo and as much information as you have about where it came from, and we’ll try to ID it for you. Would you like to know more about the geology of an area in northern Arizona? Are you curious about the kinds of minerals and rocks you’ve encountered? Do you have a question about the different kinds of lapidary equipment, or how to polish a rock? Need advice on tumbling rocks you’ve collected? Any and all questions related to rockhounding, mineral specimen collecting, lapidary arts or other geology related questions are welcome.


The atoms within the crystal of a mineral are arranged in a regular fashion to form a lattice, and the crystal exhibits a shape with surface regularity which reflects its internal symmetry[Ref1]. The shape of a crystal is often typical of a mineral. and often typical the location where found; thus, crystal shape comprised of. . . Read More

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