The cost of Calacatta marble can vary widely depending on several factors, making it essential to consider your specific project requirements. Some key factors influencing the price are size & thickness, quality, veining, supplier location. Calacatta marble slabs in a ¾’’ thick (or 20mm) can range from $200 to $300 or more per square foot or Italian price between Euro 650 up to Euro 1900 x square meter. However, it’s crucial to obtain detailed quotes from your suppliers or stone fabricators based on your project’s unique specifications. The cost of Calacatta Marble can significantly change based on location, if slabs are bought in Italy where it’s extracted the price is definitely lower.