US$ 1899.50
specifically in the Green River Formation
where it is carefully mined and extracted
Size: 9 x 6 x 15
SHALE - USED IN THE PRODUCTION OF PORTLAND CEMENT
with specimens sourced from the USA and abroad
Phantom Quartz Meteorites specifically in the Green RiverSize: 9 x 3 x4Cms Weight: 150 Grams Location: Madagascar Product Description: Phantom Quartz is a unique variety of quartz crystal that contains visible internal "phantoms" outlines or layers of earlier crystal growth trapped inside the main crystal. These ghost like inclusions are created when a crystal stops growing temporarily, becomes coated with a thin layer of other minerals or sediment, and then resumes growing over that layer. The result is a
US$ 1899.50
US$ 525.00
US$ 1099.50
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US$ 550.00
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US$ 649.50