Joined: Fri Nov 01, 2013 9:16 am Posts: 239 Location: Germany
Yes australian emeralds are known for these kind of "stripes". I have some from Afghanistan and nice ones from Nigeria too. This one is from Nigeria and looks really great...
Yes, they are really beautiful. Some look like a bar code in green and colorless.
Same in some "emeralds" from Nigeria.
"Emerald" course not sure whether they are chromian Aquas or Vanadium Beryl or really emerald.
Depends on how you define emerald.
This is the definition I've been using in a couple of gem journal articles... Emerald is a gem variety of beryl whose green color arises primarily from trace impurities of chromium and/or vanadium. Emeralds may also contain trace amounts of iron; this chromophore may add a yellow or blue tint.
The Nigerian beryl I've tested contain plenty of Cr in their green regions, so I think it is fair to call them emeralds. Apparently, Dr. Hanni agrees.
Pls I want to mine out the emerald in a rock body roughly the size of a plot of land. It has been confirmed before to contain emerald and we have also seen beryl in the surrounding area. Don't know if to blast it as dat may destroy the emeralds in case its close to the surface. Or would dexpan work in this situation maybe safer. Or how can I can go about it to get the emerald safely out of this hard rock without damaging it
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