Petrified Wood Beads

Frequently asked questions

• How is petrified wood formed?

  Petrified wood forms through a process called permineralization. When a tree falls and is rapidly buried in sediment in an oxygen-poor environment that prevents decay, silica-rich groundwater can slowly seep through the cellular structure of the wood. Over thousands to millions of years, dissolved silica deposits microcrystalline quartz in place of the organic wood fibers — replacing the wood cell by cell while preserving the original grain, growth rings, and sometimes cellular detail. The trees in commercial petrified wood are typically 5–225 million years old, depending on the deposit.
• Where does petrified wood come from?

  Dakota's petrified wood inventory comes from two principal sources. American petrified wood is sourced primarily from Arizona (from private land and BLM-permitted areas outside Petrified Forest National Park, where collection is illegal), with additional material from Oregon, Washington, Utah, and Wyoming — these deposits are typically Triassic, around 225 million years old. Indonesian petrified wood comes from Java and Sumatra, where ancient tropical hardwoods were buried by volcanic ash; these deposits are younger, roughly 5–20 million years old. Specific origin should be disclosed.
• Is petrified wood a fossil or a gemstone?

  Both. Petrified wood is a true fossil — it preserves the structure of an ancient tree — and it is also a gemstone in the chalcedony family, because the material that replaced the wood is microcrystalline quartz at Mohs 6.5–7. The fossil origin is what makes the variety distinctive; the silica chemistry is what makes it durable enough for jewelry. Some trade catalogs list it as "petrified wood agate" for this reason.
• Is petrified wood dyed?

  No — every petrified wood strand in Dakota's catalog is sold natural. The brown, tan, rust, and cream colors are intrinsic to the silica-replaced rough, produced by trace elements (principally iron oxide) present in the groundwater during the replacement process. The earth-tone palette is what designers expect from the variety; dyeing is uncommon because the natural color is already what the market wants.
• How durable is petrified wood for daily wear?

  Mohs 6.5–7 — durable enough for any jewelry application including rings, bracelets, and necklaces. Once fully silicified, petrified wood behaves like chalcedony — dense, takes a clean polish, resists scratching against most other beads. Standard care: soft cloth with mild soap; no special handling required.