Marble is a metamorphic rock formed from limestone subjected to intense heat and pressure over millions of years. This process results in a dense, crystalline structure that gives marble its characteristic swirls and veins. The stone comes in a variety of colors, including white, black, gray, pink, green, and more, often with contrasting veins of different hues. Its natural beauty, elegance, and timeless appeal have made marble a favored material for centuries.