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PR909 South Dakota Prairie Agate

PR909 South Dakota Prairie Agate


Here is something we don’t see every day, a fabulous Agate from the wild Prairie of South Dakota. It measures 4 1/2″ x 2 3/4″ x 1 5/8″ with a very nice polish on the cut face with the balance left natural. This gorgeous creation was cut and polished right here in our very own Lapidary Department. It has a great mix of colors neat banding in an unusual design specific to that of an Agate.  Definitely some thing different for the polished rock collector.

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Agates mostly occur as nodules in volcanic rocks or waters containing Silica in solution which is possibly derived from the decomposition of Silicates in the lava.  The Siliceous matter is deposited in regular layers resulting in the banded or striped formation.  It is very unlikely that you would ever find an exact duplicate of any type of Agate, Brazilian or other.

Additional information

Weight1.5 lbs
Dimensions4.5 × 2.75 × 1.625 in

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Keystone, SD 57751

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