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PR305 Sardonyx

PR305 Sardonyx


Here is something new and different from the Rock Shed’s gift department, an exceptional Sardonyx (heat treated) free form.  It has a unique shape, mesmerizing colors, and fabulous design. It has only been ground down and is not polished, another great creation of our Lapidary Department.  It measures 3 7/8″ x 3 3/8″ x 2 1/8″. The pictures don’t show the true beauty! Grab this one quick!

Have a look at our other Polished Stones!

In stock


Sardonyx is a form of Chalcedony. Chalcedony is a cryptocrystalline form of silica, composed of very fine intergrowths of the minerals quartz and moganite. Chalcedony has a waxy luster, and may be semitransparent or translucent. It can assume a wide range of colors, but those most commonly seen are white to gray, grayish-blue or a shade of brown ranging from pale to nearly black.

Additional information

Weight1.75 lbs
Dimensions3.875 × 3.375 × 2.125 in

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515 1st Street
Keystone, SD 57751

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Information: 605-666-4813

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