pregcurious
Ideal_Rock
- Joined
- Mar 18, 2009
- Messages
- 6,725
There was an article by Chris Smith in the Spring 2012 issue of InColor stating that oil or "other fillers" may be used for clarity enhancement, and heat was being used to change color. I don't remember the details of the article, but I do remember that it was rare at the time. I think that's around the time when I sent in my first stone to be tested (a spinel).
The treatments sound kind of standard back then, but by now, there may be other things. When I talked to AGL this summer, they said the number of treated spinels is higher than in the past. I didn't ask for stats. For $65, it's worth testing an expensive stone.
The treatments sound kind of standard back then, but by now, there may be other things. When I talked to AGL this summer, they said the number of treated spinels is higher than in the past. I didn't ask for stats. For $65, it's worth testing an expensive stone.