Super Druzy Brown store Amethyst

This is a stunning and unique, druzy-covered piece from one of the big Amethyst mines in Uruguay. It was sold to me as “brown Amethyst”, although I'm not sure that's what it is. Its store super sparkly and druzy in person and has a flat bottom to stand upright. It weighs 8.3 oz and measures 92mm x 90mm x 33mm at widest points.