You need to use an acrylic resin or epoxy. Check with the manufacturer for the correct product to use.
Here's a post that might help - https://www.hunker.com/12484726/silestone-counter-crack-repair
Hi! Silestone has a 25 year warranty! Maybe you are covered!
I would call a pro for this or contact the manufacturer. If this is a house that you own, it's best to get the repair done professionally so it won't affect value.
Although a botched-up job (diy or hired) on a countertop will lower the attractiveness of how the countertop looks, it will not affect the overall monetary value of a home to any great extent.
Value has to do more with geographic market, inventory availability, the degree to which all is functioning properly in the home, and less on cosmetics.
Hi Pumpkin, here's some info that may be helpful, I sure hope so.
Hello Pumpkin, hope this helps you out,
I would hire a factory certified repair person to get a warranty.
Hello. Have you checked with the manufacturer? Perhaps they have a warranty or repair product to offer.