Fossiliferous Beads
Fossil beads are stone that holds the remains of ancient life, from reef corals replaced by quartz to the shells of marine animals set in limestone. The main members are fossil coral, chrysanthemum fossil coral and orthoceras. This collection holds every fossil bead we stock in a range of finishes and shapes for bracelets, necklaces and earrings.
Appearance
Indonesian fossil coral is the most common: a warm beige to tan stone covered in small flower-like rings, each ring the cross section of a single coral polyp. Colors run from cream and grey through honey, pink and rust depending on the iron in the ground where it fossilized. Chrysanthemum fossil coral shows larger, more open radiating patterns. Orthoceras beads are black to dark grey limestone with pale shell outlines, sometimes a single cone-shaped chamber crossing the bead.
A polished finish makes the coral patterns crisp and glassy; a matte finish turns them soft and sandy. Agatized fossil coral has been replaced by chalcedony and sits at 6.5 to 7 on the Mohs scale, hard enough for daily bracelets. Orthoceras is still limestone, around 3 to 4 on the Mohs scale, so it scratches easily and should be kept dry and away from acids, perfume and harder beads.
Formation and origin
Fossil coral formed when reefs that lived 20 to 300 million years ago were buried and their calcium carbonate skeletons were slowly replaced by silica from groundwater, preserving the polyp structure in chalcedony. The best known source is Indonesia, with similar material from Florida and Morocco. Orthoceras was a straight-shelled relative of the squid that lived around 400 million years ago; its shells are found in black Devonian limestone in the Atlas Mountains of Morocco, where they are cut and polished with the rock around them. Petoskey stone from Michigan is another fossil coral, still limestone and softer than the agatized kind.
Pairings
Dumortierite beads: a denim blue that gives the beige fossil coral a cool counterpoint, and both are hard enough for bracelets.
Mookaite beads: itself a fossil-rich silica rock, in creams, mustards and reds that match fossil coral tones.
Red creek jasper beads: earthy reds and olive greens in the same warm, sedimentary palette.
Lore and Meaning
Fossil beads have been carried as curiosities and charms since antiquity; ammonites were sold as snakestones in medieval England and orthoceras shells have been collected in Morocco for generations. In modern crystal traditions fossils are associated with patience, continuity and connection to the deep past, and fossil coral is often placed with the root chakra. These are traditional beliefs, not claims of physical effect.
