Handmade jewelry, beads, agates, and vintage pieces can last longer with gentle handling and thoughtful storage. The safest cleaning method depends on the materials used. For many pieces, begin with a soft, dry cloth. Avoid soaking jewelry unless you know that the stone, metal, stringing material, and adhesives can tolerate water. Porous stones, dyed materials,…
Many sedimentary rocks can be grouped according to how their material formed. Learning these categories is a useful first step when examining a rock collection. Clastic sedimentary rocks Clastic rocks form from pieces of older rocks and minerals that accumulate, compact, and become cemented together. Sandstone, shale, and conglomerate are familiar examples. Grain size, rounding,…
Agates are a variety of chalcedony, a fine-grained form of quartz. Many agates are admired for curved bands, translucent areas, and patterns shaped over long periods as silica-rich water deposited mineral material in openings within rock. Colors and patterns can vary considerably. Some pieces show fine stripes, while others display mottled colors or moss-like patterns.…
