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Quartz (Agate) Geode
Distinctive cut and polished geode halves with agate rims and drusy crystal linings. Average size: 1 1/2–2" diameter. Utah.
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Amazonite
Feldspar group; blue-green, microcline, triclinic, 3/4". Colorado.
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Mimetite
Choice yellow-brown, globular to botryoidal crystal groups of this lead arsenate mineral. A secondary mineral in lead deposits forming a series with pyromorphite and vanadinite. Average size: 1" x 1" to 1 1/2" x 1 1/2". Mexico.
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Chalcanthite
Brilliant blue lab-grown copper sulfate crystal group. Average size: 2" x 2". Poland.
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Staurolite (Twin)
Classic staurolite crystal twins in schistose matrix with well-defined crystal form. Average size: 2" x 3". Russia.
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Apophyllite
Sharp, clear to white, single-terminated, tetragonal, 3/4–1 1/2". India.
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Pyrite (Cube in Matrix)
Sparkling 1/2" single cubic crystal in 1 x 2" matrix. Spain.
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Celestite
Sparkling pale blue transparent crystals in vug-like matrix. Average size: 2" x 2". Madagascar.