I was looking near mountain rivers for stones that I know like quartz, calcite, jasper. By chance on the top of the ground there was this one. It's a silky lustre semi translucent green-yellowish, green-blueish and green-bright stone. It's made up of layers/columns. There is no grain and it is very hard to break pieces off.

I made a hardness test, and I think it is 7.5 on the Mohs scale, aggravated by weight which corresponds to the length of 7 cm...

Location: North of Macedonia.

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  • I highly doubt this is tourmaline or kyanite. Can you take a picture looking at it from the top (when standing tall) so we can see the crystal shape? – Gimelist May 20 at 10:34
  • I admit ... I became boring with the frequent change of pictures but I am trying to use the tools that I have for a picture as clear as possible for an objective identification ... but I promise you these will be the latest photos ... I appreciate your opinion – Ymer Zumeri May 21 at 16:10
  • My friends ... I was at the location where this stone was found, the stone I called the tourmaline ... but I found many stones that had similar metamorphosis and learned that they are known as schist. If you agree, this is a sort of schist, the green schist with the highest quartz concentration. If this delayed information is worth the blame I get ... as a beginner in this subject of geology or gemology ... with respect. – Ymer Zumeri May 22 at 23:38
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    Ymer Are you are SE of the Macedonian Peninsula? Has someone talked you about The Eastern Vardar ophiolite or something similar?. It would be nice you share your location with google maps or so (move to your location acnd copy the url), so I can edit a little header on your question preserving your description so students learn not only this is beryl but what is the aassociated environment. – Universal_learner May 24 at 7:00

Based on the pictures and your description I think your mineral is beryl.

Here's why:

  1. The colour. Usually colour is not diagnostic of the a mineral type, but when beryls are green - they look precisely like this.
  2. Hardness. You say it's 7.5 so by that I understand that you mean it's harder than quartz (softer than topaz). There aren't many mineral harder than quartz than quartz that look like this. Beryl is one of the more common.
  3. The crystal shape. Beryl is commonly elongated just like yours, and it's hexagonal. The last picture clearly shows that it is hexagonal.
  4. It just looks like beryl. Sorry for being non-scientific about it, but with some experience you learn how some minerals look like. And this one looks like beryl.

Other things it can be but I don't think so:

  1. Apatite. Hexagonal, green, but softer than quartz. Usually more smooth, or if not, is not translucent.
  2. Tourmaline. Extremely rare to find non-black tourmaline. Doesn't have the characteristic striations.
  3. Spodumene. Should be octagonal, not hexagonal. Looks a lot like this one though.

I would add that this could also be plenty of other more exotic things I haven't thought about. May be beneficial to take it to a local mineral club, geologist, geological university department and ask them. They might be familiar with the local geology and give you a positive identification.


It's also a nice specimen of beryl (if it is indeed beryl). Not museum quality, but quite a rare find. Enjoy it!

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    Thanks for the aclaration. It may have economic value. Enjoy it! – Universal_learner May 22 at 10:41
  • Hi!...No I'm from Kumanovo Macedonia Mediteran peninsula Europe...Hi! frend, what do you say you make me worried, You certainly know how much a green beryl carat ... do not tell me, I'm not so lucky, maybe any heart attack ... let's see ... I'll tell you about everything ... good luck ... – Ymer Zumeri May 23 at 17:23
  • @YmerZumeri don’t worry, your beryl is not gem quality. No need for heart attacks. It’s just a nice specimen of beryl with very low economic value. – Gimelist May 23 at 20:08
  • OK, my friend Michael, I understand you, but I had a bit of humor ... for the help and the effort we made during identification, thank you ... it was a good experience ... I also believe in the future we will exchange thoughts for interesting and good things... – Ymer Zumeri May 23 at 20:51
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    My friend. I think it is identified, so can you please make a click under the points so it will be marcked with green color as the correct answer? – Universal_learner May 24 at 6:30

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This mineral has been selected for the ES Exchange Mineral Guide as representative of mineral Beryl.

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BERYL

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Beryl specimen found at green-schists (possibly at a pegmatite). North of Macedonia. Picture from user Ymer Zumeri.

Type: Silicates.

Class: Cyclosilicates.

Formula: Be3Al2Si6O18


ENVIRONMENT:

Granitic pegmatites.
Mica-schists.


MINERAL ASSOCIATION:

Quartz, feldspars, tourmaline, cassiterite.


RECOGNITION CRITERIA:

Needs edition.


  • I am gonna fill just 10 sheets and write the app. Then we can decide if this project goes on. Another posibility is to edit the answer and put the editable data there. – Universal_learner Oct 12 at 13:23

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