Re: Oregon Green
It depends on what you have. Green agate (usually moss agate), green jasper, and "Oregon jade" are found at the coast. the first two can be tumbled with standard tumbling methods; the latter is a little bit softer (it is actually a form of serpentinite) and requires tumbling in a vibratory tumbler with some cushioning media (e.g., ceramic beads) for satisfactory results.
From Tim Fisher - December 06, 2008 at 08:27:05