I’ve been making a worktop using glasscast. First attempt so a bit of an experiment. Had a ply worktop, did a sealing coat using a black pigment. Did a second black coat as you could see the grain of the ply still. The idea was to put some small sparkly stones in the clear coat as a final coat. When I mixed it is almost went white, having only mixed it with a black pigment I didn’t hunk it was a problem and assumed it would dry clear. It has now fully cured and is not clear at all. It’s about 10mm think and you can’t even see the black colouring or any of the little stones. What could have caused this? I’m assuming it’s totally unfixable and will have to start again.

Any help would be greatly appreciated