Grading Alberta ammolite ammonite rough gem material

I will be bringing my collection down south next year for the Quartzsite Powwow.
Lots of folks know what ammolite is but havent had a chance to work with it.
The gem is unique.
I am offering some pointers on what to look for if you are looking to buy some rough gem

[@ambrosearts]

Very interesting...thanks a zillion for explaining all that...looking forward to working some with it soon.

[@user-nl6bm7fz6p]

Great video! Hope to see more!

[@ericzboya5580]

Can you tell me what sandpaper grit you start off and finish with? Thanks!

[@CoryMorgan]

Hi, I usually start out with 220 grit wet/dry. If it's really rough, I use a 180. I finish with a 600 and then either coat or use a polishing compound. It depends on the quality.

[@ericzboya5580]

Thanks for the tip! I’ve found pieces that have thick layers of white, and show signs of colour, but sand down into nothing. No colour. Perhaps those pieces are of poor quality? Do you still have pieces for sale?

[@ericzboya5580]

Raw pieces.

[@CoryMorgan]

Yes some of the white, bleached pieces can be frustrating. They look like they have a lot of potential, but the color never brightens. I can fix you up with raw stuff if you like. I can be reached at [e-mail] @@ericzboya5580

[@ericzboya5580]

Thanks! Sent you an email.