Tri-color guinea pig in blue harness

I lost my tri-color guinea pig yesterday around 3pm outside the Charleston City Market on Market Street, near the Marion Square fountain. It's about 9 inches long with soft fur - white with black and tan patches. It wears a tiny blue harness with a silver bell that jingles when he scampers. One distinguishing feature: a white patch above its left ear that looks a little heart-shaped. It's a sweet, curious little guy, and this was a gift from my grandmother; it means a lot to me. I'm really hoping someone might have seen him and can help bring him back.