We were cutting rocks at the weekend on the tile saw. We were about to cut this one open when we noticed that it has a glittery inside visible in the deep cracks that runs along the outside of the crystal. We decided to leave it whole and sell it as is for someone else to crack open.
This crystal has been in the pile ready to be cut for about two years but possibly longer than that. We are certain it is an Ayrshire mineral judging by the colors and the pile that we kept it in. 
Check out the video to see how this geode sparkles.