Pseudo Stromatolite (Sandstone Concretions) Style:Specimen 2 $19 carvings measure 2

$19 carvings measure 2

It is much softer than true onyx (a quartz mineral) and will easily scratch and fizz in vinegar

Dream Amethyst (aka Chevron Amethyst) is a beautiful combination of Amethyst and White Quartz

Specimens average measurements are approx

Pseudo Stromatolite (Sandstone Concretions) Style:Specimen 2 $19 carvings measure 2These concretions are frequently referred to and marketed as stromatolites (trace fossils of algal colonies), but are not actually fossils. When cut and polished they do not show distinctive layering patterns you would expect to see in a stromatolite. From reports on the location, the flower like patterns are only seen on specimens exposed to the surface, indicating they are caused by erosion. A concretion is a hard, compact mass of rock that forms