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Igneous rocks formed from lava flows of the Archaean era (>2,700 million years ago) are often found to contain disequilibrium-textured crystals characterized by spherulitic, branching or dendritic morphologies that occur in layers near the flow surface.

from The Voices In My Head

The Beauty of Fractals

Fractal

from eBay

Green Sea Sediment Jasper Oval Pendant Bead D87074

sea sediment jasper.

from 9GAG

Some of the most beautiful minerals and stones

A selection of beautiful and unique minerals and stones, from rare opals and bismuth crystals, to perfectly-formed fluorite and rhodochrosite crystals and spectacular geodes.

Crinoid fossils. Rock containing crinoid (or sea lily) fossils. These are Scyphocrinus elegans crinoids from the Silurian/Devonian period (about 440-360 million years ago). Crinoids are marine echinoderms that appear as early as the Ordovician period (500 million years ago).

Rocks and Minerals, Tumbled Gemstones, Semi Precious Gemstone Pendants,TXT Stones, Amethyst, Rose Quartz, Moonstone, Jasper, Agate, Geode, Citrine, Onyx, Shark Tooth Fossil, Arrowhead