- Joined
- Nov 19, 2003
- Messages
- 1,290
klewis said:If the rough has been heated, do you have any indication of this by the state of the rough? So does the appearance of the rough change in any tell-tale way after heating?
Most stones are heated after cutting, since it can be hard to tell if a rough stone has inclusions which would prohibit cutting. Other than that the only change in the stone is in it's color. If the stone has inclusions it becomes much easier to tell since it can change from facet grade material to cab grade. The attached picture is a good example. It's a pale green beryl crystal that, I think, someone heated in an attempt to turn it to blue. Nice try, but this was a no-go.