from The Century Dictionary and Cyclopedia
- n. A variety of agate with red, brown, or black dendritic or tree-like markings, found in India and Brazil.
Sorry, no etymologies found.
Thus the Greeks gave the name of tree-agate to a stone which exhibits tree-like markings, and they thought that if two of these gems were tied to the horns or necks of oxen at the plough, the crop would be sure to be plentiful.
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