💫 Stone-landscape lore and care
Picture Jasper is a broad visual and lapidary category rather than one mineral species or deposit. Many pieces are dominated by opaque microcrystalline Quartz or Chalcedony, while others preserve silicified mudstone, volcanic ash, rhyolitic material or brecciated host-rock textures. Tree-like dendrites are branching mineral deposits, not fossilised plants, and appearance alone cannot confirm an Oregon, Idaho or other claimed locality.
Dense silica-rich material commonly measures approximately 6.5–7 on the Mohs scale, although fractures, porous layers, weak breccia contacts and thin edges may chip. Clean briefly with lukewarm water, mild soap and a soft cloth or brush, then dry around seams and drill holes. Avoid strong chemicals, rapid heat, steam and ultrasonic cleaning when resin, dye, coatings, backing, glue or repairs may be present.