Diamond Hill Investments Diamond Hill Investments Search | Advanced Search | New Members | Coupons and Discounts | All Categories   Finance & Insurance >> Investment Pools & Funds - Other Diamond Hill Investments 325 John H. McConnell Bvd., Suite 200Columbus, OH 43215 | map | directions (614) 255-3333 | fax: (614) 255-3333 Visit Site Need to update your categories or expand your listing? Or want to learn how your business can become a part of the Chamber? Contact us at membership@columbus.org for assistance.