Stornoway Diamond Customer Service Phone Numbers Customer service: +1 450.616.5555 Toll-Free: +1 877.331.2232   Stornoway Diamond Headquarters Info, Email, Phone number, Website and live chat Information Stornoway Diamond Corporation holds various interests in diamond projects. The Company’s properties are located in the Nunavut Territory, the Northwest Territories, and Quebec, all located in Canada.   If you