Interstones slabs, are stone products which will not crack, unless an external force or interaction causes the crack such as impacts, uneven cabinets or flooring, structural settling or movements, thermal shock from the use of crock pots, skillets or other hot items placed directly on the Interstones slabs, improper installation or other conditions in the home that may cause the Interstones Surfaces to shift. Any cuts within the work surface /island for example sink cut out or hob cut out, corners must be at a 45 degrees angle. Slabs not cut at this angle will be void of warranty terms. Don't cut a right angle directly as you risk to crack the slab. Drill a hole before the cutting. Therefore, cracks are not covered by this warranty. Caution: Do not use crock pots, skillets or other hot items directly on your Interstones Surfaces. Always place them on a trivet or cutting board to protect your Interstones from thermal shock.