FMF - Friends of Minerals Forum, discussion and message board

Welcome. I hope you enjoy your time. May I suggest collecting a few minerals from Panasquiera. The mine produces some very fine Ferberite, Arsenopyrite and Fluorapatie specimens.

Thank you! I' ...

Thank you all for the info!

Thank you everyone! :)
I think we can be sure that this is corundum, but João, what exactly is your question - if this crystal is corundum or if this corundum can be considered a ruby? ;-)
I wonder ...

So this was sold to me as a ruby, but I've now seen that corundum identification is not very linear. Can anyone help me identify this?

Hi everyone!

I'm João, a physics student from Portugal and I re-started collecting minerals some weeks ago after deciding to clean the dust off my old collection.

I'm thrilled to be part of thi ...

Author	Message
Topic: Presentation of new members - Reference Thread
João Luz Replies: 455 Views: 397287	Forum: Off-Topic and Introductions Posted: May 21, 2022 19:11 Subject: Re: Presentation of new members - João Luz from Lisboa, Portugal
João Luz Replies: 455 Views: 397287	Welcome. I hope you enjoy your time. May I suggest collecting a few minerals from Panasquiera. The mine produces some very fine Ferberite, Arsenopyrite and Fluorapatie specimens. Thank you! I' ...
Topic: Is this a ruby?
João Luz Replies: 12 Views: 939	Forum: What is it? - Where is it from? Posted: May 21, 2022 19:07 Subject: Re: Is this a ruby?
João Luz Replies: 12 Views: 939	Thank you all for the info!
Topic: Is this a ruby?
João Luz Replies: 12 Views: 939	Forum: What is it? - Where is it from? Posted: May 09, 2022 08:15 Subject: Re: Is this a ruby?
João Luz Replies: 12 Views: 939	Thank you everyone! :) I think we can be sure that this is corundum, but João, what exactly is your question - if this crystal is corundum or if this corundum can be considered a ruby? ;-) I wonder ...
Topic: Is this a ruby?
João Luz Replies: 12 Views: 939	Forum: What is it? - Where is it from? Posted: May 08, 2022 16:57 Subject: Is this a ruby?
João Luz Replies: 12 Views: 939	So this was sold to me as a ruby, but I've now seen that corundum identification is not very linear. Can anyone help me identify this?
Topic: Presentation of new members - Reference Thread
João Luz Replies: 455 Views: 397287	Forum: Off-Topic and Introductions Posted: May 08, 2022 16:38 Subject: Presentation of new members - João Luz from Lisboa, Portugal
João Luz Replies: 455 Views: 397287	Hi everyone! I'm João, a physics student from Portugal and I re-started collecting minerals some weeks ago after deciding to clean the dust off my old collection. I'm thrilled to be part of thi ...