The cost of a real stone fireplace can vary widely, depending on factors such as the type of stone, size of the fireplace, and complexity of the design. Generally, prices can range from $2,500 to $10,000 or more. Basic natural stone fireplaces might start at the lower end, around $2,500 to $5,000, while high-end, custom-designed fireplaces with premium stone can exceed $10,000. Additional costs may include installation, which can be around $500 to $2,000, and potential structural modifications to your home. It's advisable to get a detailed quote from a professional to understand the specific costs for your project.