Stones - Agate/Onyx - Fossil
Fossil agate is a general term for instances where various types of agate have formed as mineral replacements in fossilization. While some specimens are extraordinary, many are just concretions of small shells that form an interesting marble-like pattern. You can often pick out the shapes of different shells in large chunks. The concretions are sometimes cut for jewelry.
Fossil coral is a natural stone that is formed when ancient coral is gradually replaced with agate. The proper name for this material is agatized coral or agatized fossil coral. The fossilized coral typically appears as small flower-like patterns in the stone. patterns, natur fossil, names, coral fossil, natural stones, agat fossil, fossils, prints, fossil coral
Oval cabochon of fossil agate. Shell forms can clearly be seen in this specimen.
Faceted barrel beads cut from fossil agate. Small specimens like this often show interesting patterns, but distinct fossil shapes are not common.
Oval cabochon cut from agatized fossil palm.