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Friday, July 3, 2015

10 comments:

KATE SARSFIELD said...

I know this one - blue sugilite! See, I'm learning!

Natalia Khon said...

I have a story for this one. I was a bit in a hurry to finish it, so I scratched it while making a bezel for it. So I took it to a professional lapidary to re-polish it.


He looked at it and said: "You know that it is dyed, right?" (a stone cannot be re-polished if it is dyed, as a dye is only on the surface, and polishing removes a thin layer of the surface.


I said: "No, it is not. I bought it from a reputable seller". So he did it. The stone, of course, stayed dark blue, as the color is real and, of course, goes all way through the stone.


I though it was interesting, that a professional lapidary who has seen a lot more stones than an average jeweller, have not seen a blue sugilite like this one before!

KATE SARSFIELD said...

I suppose because it's such a rarity - see you're teaching him as well!

Natalia Khon said...

That was surprising... as he actually taught me a lot more :)

KATE SARSFIELD said...

What sort of things?

KATE SARSFIELD said...

And what sort of dyes are used to colour stones?

Natalia Khon said...

He was a lapidary who was selling the stones in his store. So I learned about many nice stones that they were not teaching us at school. It was gemology that I've learned in college (precious stones only). I barely knew any nice, though not precious stones until I've found his shop :) That also was a store where I worked and taught my classes :)

Natalia Khon said...

They use many ways... I do not know all the ways to due a stone. Some of them sound quite nasty... like soaking the stones (mostly agates) in some kind of acid with a dye. Just knowing that makes jewelers to not respect a dyed stone :)

KATE SARSFIELD said...

He sounds really interesting, the sort of person you could listen to for hours!

Natalia Khon said...

We could, if he was talking much :)

 
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