Birds Eye Rhyolite 4mm Round - 15-16 Inch Lime Pink (Dyed) its brilliant color comes from

its brilliant color comes from the presence of very small inclusions of Nickel compounds

between Topaz (8) and Corundum (9)

Its bright green coloration is due to traces of chromium

Obsidian ranges in color from opaque black

Cherry Quartz is a manmade mixture of clear glass with swirls and flecks of deep pink

Birds Eye Rhyolite 4mm Round - 15-16 Inch Lime Pink (Dyed) its brilliant color comes fromBirds Eye Rhyolite is named for its circular color formations of deep reds, light tans and earthtones. Rhyolite was named "streaming rock" because of its beautiful bands, bubbles and crystal to rich layers that form as lava flows onto the surface of stone and can look very different depending on how that lava erupts. Rhyolite has a non to crystalline composition similar to granite but with a smaller grain size.