Butler Onyx Slab found in San Bernardino County Calif.
Butler Onyx Slab found in San Bernardino County Calif. Butler Onyx Slab found in San Bernardino County Calif. Weighs about 3.54 Oz and measures about 4" x 2.25" x .246" Thick or 6.25 MM Thick. No cracks only a small vug.