Botryoidal Chalcedony with Quartz Specimen adhered to Matrix

This item is a natural mineral specimen, likely a geode or a section of a vug, exhibiting botryoidal chalcedony intergrown with crystalline quartz. The piece presents as an irregular, somewhat angular fragment. The dominant color palette is a light, translucent greyish-white for the botryoidal chalcedony, with areas of clear to milky white quartz crystals. Significant portions of the exterior are coated in a reddish-brown, earthy matrix, possibly clay or iron-rich sediment. The surface displays a variety of textures, ranging from smooth, grape-like clusters of chalcedony to sharp, pointed quartz crystals and rough, granular matrix material. There are visible voids and small cavities within the formation. The overall size appears to be palm-sized. There are no discernible manufacturing details, markings, or signatures, as this is a natural formation. The condition appears to be as-found, with no evidence of significant damage or repair, though inherent natural fractures and inclusions are present. The earthy matrix is loosely attached in some areas and contributes to the overall rough aesthetic. Its age is geological, and the style is purely natural. The quality is inherent to the specimen's formation and the clarity and structure of the crystals and chalcedony.