Bullfrog Agate, named by me, reflects the specific single and small location where this unique agate is found on The Carver Agate Field, located near Alpine, Texas. Bullfrog Agate has a formative process which is different from the geodes, nodules, agates and jaspers found throughout The Carver. Bullfrog Agate is characteristically identified by the soft white rind almost always surrounding a dazzlingly diverse array of colors and agate forms, which contain highly varied and spectacular sagenitic material. For the full geological report and many more photos of this rare and fascinating agate, see Bullfrog Agate Report, the latest of the Carver Reports.