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Septarian Nodules

Septarians formed between 50 to 70 million years ago. As a result of volcanic eruptions, dead sea life was chemically attracted to the sediment around them, forming mud balls. As the ocean receded, the balls dried and cracked. Due to their bentonite content they also shrank in size, creating the cracks inside. As decomposed shells seeped down into the cracks in the mud balls, calcite crystals formed. The outer thin walls of calcite then transformed into aragonite. The name Septarian comes from the Latin word "septem", meaning seven, because the mud balls had a tendency to crack in 7 points in every direction, thereby creating the distinctive pattern these nodules exhibit. Septarians are composed of Calcite (The Yellow Centers), Aragonite (The Brown Lines), and the outer grey rock is Limestone.

septarian nodules


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Septarian Nodule Sphere

SEP-5D Septarian Nodule Sphere, from Madagascar. Approximately 2.3 - 2.5 inches in diameter. Each one unique.

Septarian Pendant

JW-SEP1 Septarian Pendant. Nice, thick point, suitable for a male or female. Approximately 1.5 inches long. Black cord and clasp included. Each stone unique.

Polished Septarian Nodule Stones

SEP-15 Polished Septarian Nodule Stones from Madagascar. We will include a black velvet storage pouch. Approximately 2.25 - 2.5 inches long. Each one unique.

Polished Septarian Nodule Stones

SEP-8 Polished Septarian Nodule Stones from Madagascar. Approximately 1.5 - 1.65 inches long. Each one unique.