Spider jasper Aragonite but on other specimens they

but on other specimens they have a near-metallic luster resembling pyrite

with brief phosphoresce (try it in the dark

Some specimens are speckled with small black inclusions

The thin hyalite coating on this piece is crackled

Spider jasper Aragonite but on other specimens theyLocale: Mexico Approx dimensions: 3 x 2. 75 x 2. 5" Approx weight: 435g Spider jasper is called a lot of names in the industry, including chrysanthemum, starburst, and fireworks jasper, due to its distinctive radial starburst pattern on a dark chocolate brown and red tinted background. Spider jasper is in fact not a true jasper, but a variety of rhyolite. A lot of jaspers are actually rhyolite! Mineralogically jasper is a variety of chalcedony, which