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SUPER DARK PURPLE ALMOST BLACK SLAG .70


Jeremysvt

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Slag vs Swirl? It’s hard to get a handle on these sometimes. 
Try some images on top of a strong light. 
I made a wooden light box years ago with a 1/2 hole drilled into the top, I left two sides open to help dissipate the heat. I installed a bright full spectrum light about six inches below the hole ( I am using a white spectrum LED now😁). The marbles fit so no light escapes except through the marble itself. You can spin the marble around without any damage being done to it and you can also take images this way. 
These dark marbles will reveal themselves and many marbles are easily inspected this way ( AV, Inclusions, a trace of Ox, etc ) 
I think that yours may be an Akro slag----imho of course. 
Backlight them all!!
Marble--On!! 
 

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Here is my light box my friend, simple but effective.
I forgot to add that the hole in the top is slightly offset so the light is not directly below the hole.
I just made it out of scrap that I had lying around. Some nice old pine though.
Marble—On!!
 

Light box 1.JPG

Light box 2.JPG

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2 hours ago, akroorka said:

Here is my light box my friend, simple but effective.
I forgot to add that the hole in the top is slightly offset so the light is not directly below the hole.
I just made it out of scrap that I had lying around. Some nice old pine though.
Marble—On!!
 

Light box 1.JPG

Light box 2.JPG

very neat!  playing with led lighting...stay tuned!

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3 hours ago, akroorka said:

Here is my light box my friend, simple but effective.
I forgot to add that the hole in the top is slightly offset so the light is not directly below the hole.
I just made it out of scrap that I had lying around. Some nice old pine though.
Marble—On!!
 

Light box 1.JPG

Light box 2.JPG

Thank you Akroorka!  Cool box!  That will be my summer project! Great idea, offsetting the hole and using a LED. Good to know. 😁

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