* Different origins: Sandstone is a sedimentary rock formed from cemented sand grains. Granite is an igneous rock formed from the cooling and crystallization of magma deep underground.

* Different composition: Sandstone is primarily made of quartz and feldspar, while granite contains a higher proportion of quartz, feldspar, and mica.

* Different formation process: Sandstone forms through the accumulation and cementation of sediments, while granite forms through the cooling and crystallization of molten rock.

It's impossible to transform sandstone into granite through natural processes. While both rocks contain some similar minerals, the fundamental differences in their formation and composition make this conversion impossible.