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Can anyone help identify this rutile quartz?

I bought this at auction yesterday for $10. It seems like an unusual piece to me. I have seen golden rutile stars, and quartz with tourmaline (which is what it looks like to me) but I’ve never seen tourmaline form in a star in quartz.

I was also thinking maybe Hollandite, but the star is much larger and developed than what I have seen in typical Hollandite.

Any aid in identifying and placing a value on this piece would be greatly appreciated!

Info given from auction:

  • Title: 2.40 Ct Natural Rutile Quartz Oval Cab
  • Stone Clarity: Transparent
  • Gemstone: Natural Rutile Quartz
  • Carat Weight: 2.4
  • Size/Dimensions: 11.00 x 8.00 x 4.10 mm
  • Additional Information: Excellent Oval Cabochon / Very Good Luster / Origin - Brazil / Hardness - 7.0 / Treatment - None-Unheated

Tourmalated quartz. It’s tourmaline not rutile in the gem.

It’s a pretty stone.

Thank you very much for the info! :slight_smile: