What is this?

[LabRat]

Originally Posted by busterb

Heated in oven then dropped in water. .

Yes, this is often done with marbles to get the crackled look. (My grandma had lots of these, and I asked her once)

Some people like the look of it, for using in crafts etc.


BTW, I tried this, and most of my marbles cracked, but fell apart. There is an art to getting just the right temp difference. --No cracks about losing my marbles etc. Too easy!

The clear one on the right got struck by lightening, which heated it/melted part, and the rain cooled it fast enough to get the crackles.