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Ships within 48 hours · Estimated delivery Sep 3 - Sep 8
Reserve from the case
Ships within 48 hours · Estimated delivery Sep 3 - Sep 8
The chemical formula for Black Tourmaline is NaFe2+3Al6(Si6O18)(BO3)3(OH)3(OH)
Spark the interest of a young budding paleontologist with this First Rock & Mineral Collection
and color will vary between each piece
Swazi Agate necklace features a beautiful 28 mm round Swazi Agate cabochon in silver on an 18" Italian silver chain
This specimen features material mined in May 2019
CHI169jr Chinese Agate, Middle-Class Mine Towers & Points The chemical formula for BlackThis is a polished specimen featuring yellow and orange agate with a vugg containing little crystal clusters. 4. 6 cm x 5. 6 cm 0. 32 lbs Agates from the Middle Class mine show a broad range of colors including red, yellow, purple, brown, blue, and black. Agates from the Middle Class mine also often contain druzy pockets with hematite and calcite crystals. Agates from this mine also contain a higher percentage of heat and stress fractures from the
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