1. Blot up as much of the wine as possible with a clean, dry cloth.

2. Mix equal parts hydrogen peroxide and baking soda to form a paste.

3. Apply the paste to the stained area and let it sit for at least 30 minutes.

4. Rinse the area with warm water and a clean cloth.

5. For stubborn stains, repeat the process until the stain fades or disappears completely.

6. If the stain persists, try using a commercial stone cleaner or contacting a professional stone cleaning service.