Quote - Hah - I know you have an aversion to matmatic but it comes with demos of agate-like swirls.

Create two clouds nodes. The first should be gray and white, and plug that into the scale input of the second. Use colors on the second one. Try different ratios in two scales.

Thanks! I'll give it a shot ;).  And I do have an aversion to Matmatic...lol. I understand programming language about as much as I understand the material room :P LOL

Laurie