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New collectors tend to make the same mistake: spending their whole budget on the biggest, showiest cluster in the case

Not every treated stone on the market is a scam. Heating, dyeing, and coating crystals are old, well-documented practices, and

Most of the damage that happens to a rock or crystal collection doesn’t happen underground. It happens on a kitchen

Hematite and goethite are two of the most common iron minerals on Earth, and on their own neither one is

Lithium is everywhere in the news right now, all of it about batteries. But the first mineral anyone ever isolated

Turquoise gets the fame, but a lot of what people assume is turquoise in a mixed lot of stones is

Petrified wood looks like it should be a trick. Pick up a piece and it has bark texture, growth rings,

Most minerals hold their color for as long as they exist. Azurite has an expiration date built in. Leave it

Quartz is the second most common mineral in the Earth’s crust, which almost makes it sound like it shouldn’t be

Most collectors picture Brazil or Mexico when they think of museum-quality calcite. Some of the best examples anyone has ever