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Photo Information
Copyright: Grzegorz Wieczorek (red45) Gold Star Critiquer/Gold Star Workshop Editor/Gold Note Writer [C: 2636 W: 74 N: 9091] (31094)
Genre: Landscapes
Medium: Color
Date Taken: 2005-04-02
Camera: Olympus 740UZ
Photo Version: Original Version
Date Submitted: 2005-04-13 4:05
Viewed: 3056
Points: 34
[Note Guidelines] Photographer's Note
Today another picture from Interstone 2005. Problem is that I don't know what is it :-) On Interstone there was many interesting shows - you could cut geode with special electric saw and admire beautiful agates inside or if you were kid, you could try to find gold in with special old gold-diggers equipement. Those minerals were also as a part of one demonstration - in dark box there were few crystals which emited colorfull light. I don't know why exactly :-) Maybe because of light natural radioactivity, maybe because of electromagnetic fields. I took two pictures - left is with flash [it isn't B&W], right without. Looks like those crystals emiting very weak light, invisible in bright light.

dew77, Janice, marhowie, AndyB, Fisher, Luc, extramundi has marked this note useful
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To LordPotty: Good!red45 1 04-13 07:20
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Cudownie kolorowe ;-) Uwielbiam wszystkie mineraly ;-)

this is very interesting.. Love the colours on the right :)


  • Great 
  • dew77 Gold Star Critiquer/Gold Star Workshop Editor/Gold Note Writer [C: 4432 W: 248 N: 4028] (13270)
  • [2005-04-13 5:53]

Good show Greg! I liked your shots both;with flash and without
The exhibition must be very interesting! Thanks for sharing shots from Interstone 2005...

  • Great 
  • honza Gold Star Critiquer/Gold Note Writer [C: 533 W: 0 N: 720] (4197)
  • [2005-04-13 6:10]

Very good picture Greg. Beautiful minerals with magic colors. I like the nice crystals. Perfect sharpness and colors.

  • Great 
  • sAner Gold Star Critiquer/Gold Star Workshop Editor/Gold Note Writer [C: 1455 W: 74 N: 1426] (4750)
  • [2005-04-13 6:20]

Original post Greg. Very nice and bright colors. TFS!

  • Great 
  • Janice Gold Star Critiquer/Gold Star Workshop Editor/Gold Note Writer [C: 3277 W: 148 N: 6163] (18832)
  • [2005-04-13 6:21]

That is so interesting Greg. It looks like 2 completely different displays. Monika certainly gave a good suggestion as to why the differences. TFS.

Hi Greg. I have seen this before. Some minerals naturally flouresce when exposed to Ultraviolet light at certain wavelengths.It is to do with their atomic structure and the way they absorb and emit energy.
You can read more about it at this website

Nice shot Greg, but I'm not enrirely sure if it is proper for TN.
On the other hand these are minerals, so maybe it is.
Anyway, as for the light. I'm sure that this is not radioactivity and it's rather not the magnetic field.
Maybe these are simply crystals illuminated from beneath with electric light. You know, to make the nice effect.
I just read Steve comment and I think that he's right. Maybe these crystals are illuminated from beneath with UV lamps.

Anyway, the shot is very interesting and looks nice.

Greg, It's an interesting exhibit and the side-by-side with and without flash demonstrates their light emitting characteristics very well. Thanx!!

This is a cool image to show the flourescense of these minerals. As a child I was a " rock hound" and loved nothing better than to search for all the different kinds of rocks and minerals like feldspar and obsedian, garnets and rose quartz. There is a place in New Hampshire near our then summer home that had a display in the caves of flourescent minerals and would show them under a black light...it was like magic to me and still is. Thanks for sharing this image that portrays one of the magic moments of our natural world.

Strange result on the left shot, very noce colours on the right one.
Well done my friend.

Interesting shot Greg,
It's a good difference between the two shots. I'm certain that a light was used to enhance the display. Still evry impressive.
Thanks for posting

  • Great 
  • Fisher Gold Star Critiquer/Gold Star Workshop Editor/Gold Note Writer [C: 1540 W: 309 N: 2234] (8915)
  • [2005-04-13 14:46]

Excelent work, Greg. Well done on this presentation.


  • Great 
  • AndyB Gold Star Critiquer/Silver Workshop Editor/Gold Note Writer [C: 1366 W: 32 N: 1351] (3982)
  • [2005-04-13 14:48]

Very interesting work.
Excellent colours and presentation.
Good work,well done.

  • Great 
  • Graal Gold Star Critiquer/Silver Workshop Editor/Silver Note Writer [C: 751 W: 31 N: 20] (5100)
  • [2005-04-13 14:57]

Zaskakujące zdjęcie w TN - w pozytywnym znaczeniu. Faktycznie efekt z fleszem i bez jest zaskakujący. Technicznie - wszystko ok. Podoba mi się. Pozdrawiam,

  • Great 
  • Luc Gold Star Critiquer/Gold Star Workshop Editor/Gold Note Writer [C: 1835 W: 301 N: 4287] (14767)
  • [2005-04-13 20:11]

Personal assessment of the photo: great.
Great visual impact.
Aptness of the photo for the site: excellent.
Personal assessment of the note: good.
Thanks, Greg. An interesting post which opens my appetite to learn more about this phenomena.

Another theory:
I think that when you take the shot without flash, you are getting the light that goes through the mineral, which colours the light passing through it.
When you take it with flash, you get the light reflected on the surface of the stone, did not go through it.
If you look carefully, you can still see some colour on the flash shot. Very amusing. I enjoyed very much.

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