Margui wrote: ↑1 month ago
I wonder how many fakes I have. I have doubts about my Mexican fire opals.
on the gemology forum I'm on, someone made the comment that they went through their friend's massive jewelry collection and nearly all of it was fake. She had bought it from JTV (and likely other places I'm sure). Spinel, sapphire, ruby, even some nicer looking amethyst.
I THINK, an easy way to spot fakes would be to buy a short wave UV light, spectrum 265. They are expensive, but the glow doesn't lie, and anything can be tested. Many of my stones from SLC have prongs that stick up and won't allow testing on my refractometer, or they are too tiny to test.
I JUST ordered a mid-range UV light to test my loose stones (would also work on my jewelry). I'll let you know if it's a good one or not . . . many hand held types are more of a long-wave light (think party black light) and show a different color. Short wave lights are more expensive and special glasses are needed.
Mexican fire opal, the GOOD STUFF looks NOTHING like what SLC carries. Same with Grandidierite. You'd never guess it was the same stone. Chances are good your fire opals ARE real, but just very low grade ones. Or maybe not, lol!