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well-formed crystals displaying parallel growth and twinning
but do not lick it or put it in your mouth
Many of these specimens are speckled with small pits on the faces
Sandstone arches make a nice decorative accent piece around the home or in a desert terrarium
snaking chalcedony with concentric rings visible
Ferruginous quartz cluster Siderite well-formed crystals displaying parallel growthLocale: Morocco Approx dimensions: 4. 5 x 3 x 3", longest crystal 5. 5 cm Approx weight: 627g Known as red or ferruginous (iron bearing) quartz, this unusual variety of quartz gets its color from iron oxides, typically hematite. The quartz in this specimen initially grew colorless; broken crystals along the edge reveal the quartz crystals have a clear core bordered by a thin top layer of brick red quartz. A change occurred during the growth process
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