Chalcedony is the form of Quartz that is compact and microcrystalline.
You will get a set of ten Quartz chalcedony chunks approximately 1 inch in size.
Great for classroom rock collections, science fair projects, and geology demonstrations.
Please be aware that this is a natural mineral, and as such, each piece is one of a kind! The set you receive may not be the same as the ones pictured, but it will be similar. Rocks come in irregular shapes, sizes and weights.
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