Natural mineral specimen, possibly a geode fragment or botryoidal quartz/limonite concretion

This appears to be a natural mineral formation, likely a geode fragment, botryoidal quartz, or iron-rich concretion. Such specimens form over thousands to millions of years through mineral deposition in cavities within sedimentary or volcanic rock. The golden-brown coloration suggests iron oxide (limonite) or other metallic mineral content, which creates the distinctive crystalline or nodular surface texture. Mineral specimens like this appeal to rock and mineral collectors, geology enthusiasts, and those interested in natural history. These specimens are valued for their unique formations, aesthetic appeal, and educational significance in understanding geological processes. Collectors appreciate the natural beauty and scientific interest of such formations, making them popular items in the mineral collecting community.