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| Author: | TOM KIDWELL [ Fri Oct 10, 2014 2:52 pm ] |
| Post subject: | Edenite |
I have a small parcel of Russian Edenite crystals which are decent sized and facet grade. The RI and hardness stats on this material look good, but I have never seen a cut stone. Has anyone else run across this material ? |
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| Author: | Stephen Challener [ Fri Oct 10, 2014 3:07 pm ] |
| Post subject: | Re: Edenite |
Edenite is an amphibole, one of the (many) end-members of hornblende. Not too many amphiboles form facet-grade crystals, though of course nephrite is a well-known gem species. Tremolite and richterite/winchite are two other examples which come in facet grades. I don't know how difficult tremolite is to facet but richterite is difficult according to a G&G article. My guess is that edenite would be more like tremolite than richterite, so it's probably not too terrible to cut. |
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| Author: | Marlow [ Fri Oct 10, 2014 3:16 pm ] |
| Post subject: | Re: Edenite |
Tom, which color? Sounds interesting.... |
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| Author: | TOM KIDWELL [ Fri Oct 10, 2014 3:45 pm ] |
| Post subject: | Re: Edenite |
My Edenite rough is clear, maybe slightly green on white paper. I have some tremolite crystals that will cut some nice green stones, so I may try those first. What color is richterite? |
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| Author: | Marlow [ Fri Oct 10, 2014 4:04 pm ] |
| Post subject: | Re: Edenite |
TOM KIDWELL wrote: My Edenite rough is clear, maybe slightly green on white paper. I have some tremolite crystals that will cut some nice green stones, so I may try those first. What color is richterite? Tremolite from Merelani? Would be nice if you show a cut stone ( tremolite and edenite) here ( GO marketplace too  )
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| Author: | Stephen Challener [ Fri Oct 10, 2014 4:57 pm ] |
| Post subject: | Re: Edenite |
Facet-grade richterite is pale yellow. Pretty stuff, and interesting as a curiosity. I got an awesome deal on a small parcel of crystals--the coolest thing to me is that you can look inside the crystal and see the perfect 60-120 cleavage which is the trademark of the amphibole group. |
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