Birds Eye Rhyolite 4mm Round - 15-16 Inch 6-8mm At that time yellowish gems

At that time yellowish gems were called "topaz" in many parts of the world

it was feared for centuries as a bad luck stone

Bloodstone was known in antiquity as Heliotrope

It is a rare variety of Pectolite

Birds Eye Rhyolite 4mm Round - 15-16 Inch 6-8mm At that time yellowish gemsBirds 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.