Brazilian Piranha Agate Designer Cabochon authentic

This listing is for a fine designer cabochon of Brazilian Piranha agate. This stone features a dynamic pattern and color change. The dark areas are almost black with a faint pattern. The light area is a light gray color. At the top is a small showing of white crystals. The back is polished. Fine stone. DIMENSIONS: 42.5 x 4.4 MM.
SKU# A94. Thanks for taking time to consider my work. authentic