The remnant you have is a piece of junk, and may in fact, not even BE Caesarstone.or was a defect slab to begin.

" Good quality quartz slabs have through body color. What is through body color? Those veins, patterns and other designs you see on the top of the slab, those should go all the way through to the bottom of the slab.

If color doesn’t go all the way through the body of the slab, then don’t your edges and undermount sink cut outs will look bad because the color will stop part of the way down the edge., if you have a waterfall edge that maybe has an exposed backside, that is going to look totally different than the top of the slab.

This is a common issue that a lot of homeowners miss until it’s too late but is easily avoidable. Simply look at the edge of the countertop sample or slab. If the color starts to fade or dissipate halfway down the edge, stay away."