Chert Rock Microcrystalline Cryptocrystalline Silica 2in Display Specimen

Chert rock specimen composed of microcrystalline or cryptocrystalline silica. Good pre-owned condition with natural surface features and typical chert texture. Ideal for collectors, geology study, or display in a mineral cabinet. Sold as a single specimen from a private collection. Please review photos for color, surface detail, and any visible imperfections before purchase.