Diamond Consulting Group, Inc. Diamond Consulting Group, Inc. Search | Advanced Search | New Members | Coupons and Discounts | All Categories   Computers, IT & Technology >> Consulting Services - Other Scientific and Technical Diamond Consulting Group, Inc. 1335 Dublin Road, Suite 209BDublin, OH 43215 | map | directions (614) 481-0200 | fax: (614) 485-9538 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.