Geological Activity Features
Some natural countertop stones, especially quartizes, dolomites and marbles may show geological activity features that look like cracks in the stone. These lines were most likely do to compression and shifts during the creation millions of years ago. One can only imagine the pressure and heat that was involved during the creation of these stones, with quartize receiving the most. These geological activity features may look similar to cracks or fractures, however they they will feel smooth and fused together.
These geological activity features give these natural stones a special look, a window back in time before humans on earth. This may be the accent look that will give your countertop the unique natureral feel you are looking for, only you can decide.
Manhattan - Leathered - 3cm Dolomite is shown as an example