Opal is a
hydrated silica mineraloid famous for its kaleidoscopic flashes of rainbow colors.
Boulder Opal is
a rare solid gemstone composed of precious opal naturally fused to an ironstone host rock. Formation:
Created when silica-rich water seeped into cracks of ironstone boulders in the outback of Queensland, Australia, hardening over millions of years.
Mexican Fire Opal is
a vibrant, transparent-to-translucent gemstone known for its striking red, orange, and yellow body colors caused by trace amounts of iron oxide.
