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PR510 Septarian Slab

PR510 Septarian Slab


This is a very nice polished Slab from a Septarian Nodule.  This gorgeous slab has a very pretty Yellow Calcite center with contrasting Brown Aragonite as well as  subtle “rainbow” reflections all in an interesting design.  This material is from Utah and measures 8″ x  6 3/4″ x 5/8″ thick and has a great polish on the front face. An outstanding Septarian slab!

Have a look at some of our other Septarian pieces!

In stock


Septarians are commonly composed of a carbonate mineral such as Calcite, a microcrystalline form of Silica as in Flint or Jasper, or an Iron Oxide such as Hematite.  These specimens are also known as a concretion which is a type of sedimentary rock. Septarians were formed millions of years ago by sediment forming around a fossil to create a mud ball transforming the fossil into Calcite and Aragonite.

Additional information

Weight2.50 lbs
Dimensions8 × 6.75 × .625 in

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