Lost gold-plated locket pendant on a thin chain near Riverfront Park, Spokane.

I lost a beautiful gold-plated locket pendant on a thin chain while walking my dog around Riverfront Park in Spokane. I remember taking it off to check my phone, and I must have accidentally left it behind. The locket has some sentimental value, as it has a photo inside that's dear to me, and I would love to have it back.