Grape Agate Orthoceras a pseudomorphous crystal broken through

a pseudomorphous crystal broken through

weight and other characteristics

scalenohedron on fluorite

white barites

Grape Agate Orthoceras a pseudomorphous crystal broken throughGrape agate is a marketing name for tiny purple quartz crystals that have a round shape, purple color and a cluster that resembles grapes. Geologically speaking, these are not really agates, but instead more likely amethyst, or even more accurate "botryodial" (round) amethyst. The "grapes" of these specimens are tiny. They range between about two and eight millimeters across. Although purple is the most common color leading to the "grape" name, some