Final answer:
Marble is the metamorphic rock formed from limestone through the process of recrystallization under heat and pressure. It is commonly light-colored and is used for carvings and building materials.
Step-by-step explanation:
The metamorphic rock formed from limestone is marble. Limestone undergoes a process of recrystallization under conditions of heat and pressure, transforming into the harder rock known as marble. This process typically involves the recrystallization of calcite or dolomite minerals present in the original limestone. Marble is recognized for its ability to be carved and polished, making it a favored material for sculptures and building materials. Unlike stones like gneiss, which are characterized by foliation and banded patterns due to high-grade metamorphism of schists or granites, marble is known for its light color, often white, and may exhibit colorful markings due to impurities in the limestone.