gemfeller
Cave Dweller
Member since June 2011
Posts: 3,775
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Post by gemfeller on Sept 3, 2017 16:28:28 GMT -5
That's really interesting info @shotgunner. I had no idea hauyne was involved in those materials. I've always wanted to get some facet-grade hauyne from Germany but so far no cigar. Finished stones are small but very beautiful. And cheap! $25 for finished stones in the 3mm range. <0.1 carat For such a rare stone it seems reasonable I have some on-line Dutch acquaintances who actually go to Germany to mine hauyne. Apparently the quarry where it's from is still open to collecting, but as you note the finished stones are small. Wish they were bigger.
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Post by coloradocliff on Sept 8, 2017 21:50:53 GMT -5
A streak test is the easiest way to tell the difference. Lapis will steak blue and Sodalite will streak white. Just as a side note, becasue of it's deep blue intensity and it's color stability over time, ground Lapis pigments have been used as a paint pigment for over two millennium. Larry C. Here Tela rockjunquie
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Post by rockjunquie on Sept 8, 2017 22:30:21 GMT -5
A streak test is the easiest way to tell the difference. Lapis will steak blue and Sodalite will streak white. Just as a side note, becasue of it's deep blue intensity and it's color stability over time, ground Lapis pigments have been used as a paint pigment for over two millennium. Larry C. Here Tela rockjunquie It was Orrum.... hmmmm. it wasn't so long ago either. Someone should have been keeping up with their reading.
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Post by orrum on Sept 9, 2017 8:14:21 GMT -5
Me what?
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Post by rockjunquie on Sept 9, 2017 9:34:27 GMT -5
Someone recently asked the exact same question.
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Post by vegasjames on Sept 9, 2017 16:53:06 GMT -5
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Post by vegasjames on Sept 9, 2017 16:55:58 GMT -5
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