Jabo?

[SequoiaBET]

From one of their "tank washes" maybe? Hard to get a good picture of. The last 2 pics are backlit to show the transparency. It's very dark in hand, but under bright light you can see it is a transparent tealish base glass with what I have seen called 'purple oxblood'. (It's a JABO thing. I'm not sure how widely recognized/accepted that description is. I should start a separate discussion on that to see what others know/think.)

Anyway, this one is 19/32 (.59) inches with some green UV in the clear glass. 

[Nantucketdink]

this is what we refer to as purple oxblood.  It happens when some type of transparent blue glass is over oxblood 

[Fire1981]

Yes, or DAS but I don't know which run it's from.🔥

RAR

[akroorka]

15 hours ago, SequoiaBET said:

Anyway, this one is 19/32 (.59) inches with some green UV in the clear glass. 

There were many from the Jabo "Contract Runs" that need to be backlit or imaged under heavy light.

This may be one of them imho.

When purchasing these online--always notice the back ground in the image--if it is too bright to tell what the background is--back off.

Just my opinion but I have been there and done this.

Marble--On!!

[Fire1981]

If you're using a phone. Mine camera goes to 5X but I shoot with 2X w/Machro no flash.🔥

RAR

[SequoiaBET]

Thanks all! The purple on this marble does look like what you posted Nantucketdink- it's just hard to see. It would make sense that since this is a transparent blue based marble  the oxblood would be purple. I have other examples of it from other JABO runs, but never knew why it looks like it does. So thanks for the explanation of how it happens.

And yeah, I have enough JABO's to know about the darkness issues in some runs/marbles. It's amazing what a high quality camera and bright lights can capture compared to what your eye sees in hand under normal lighting. Quite a difference! This was part of a bulk potpourri purchase of a variety of manufactures a while back.