Crackled Agate – Not Heat Treated

by ZB.

My girlfriend and I found this agate on a small island beach off the coast of Washington State.

Everything we can find about this type of effect claims heat treatment to get the crackle, but that was definitely not the case here.

Maybe it was heated naturally a long time ago. Does anyone know how common it is for this effect to occur naturally?

Also, we’d like to have it made into a pendant. Any advice on finding a trustworthy jewelry maker who works in this material?

ZB