Here you will find examples from my 50 years of collecting.
OPAL from Virgin Valley, Nevada
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CALCITE CRYSTALS from Brazil
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SELENITE CLUSTER from Peru
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HYALITE from No. Carolina
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HALITE from the Salton Sea, CA.
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FLUORITE from Clay Center, Ohio
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MEIONITE (WERNERITE) from Canada
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WILLEMITE and CALCITE from Franklin, New Jersey
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