- CEO
- Patrick Sévigny
- Full Time Employees
- 556
- Sector
- Basic Materials
- Industry
- Other Precious Metals
- Address
- 1111 St.-Charles Street West Longueuil QC Canada J4K 5G4
- IPO Date
- May 29, 2014
- Business
- Stornoway Diamond Corporation Stornoway Diamond Corporation engages in the exploration, development, and production of diamonds in Canada. The company owns and operates the Renard Diamond Mine, Quebec's first diamond mine located in the James Bay region near the Otish Mountains, approximately 800 km north of Montreal; it produces rough diamonds from open-pit and underground operations supported by processing facilities, an all-weather airstrip, access roads, and modular camps for year-round activities. Stornoway focuses on diamond properties in stable mining jurisdictions like Quebec, targeting global markets with its high-quality output from the Renard kimberlite pipes, while maintaining a pipeline of exploration projects. Founded in 1996 and headquartered in Longueuil, Quebec, the company previously pursued a merger with Dominion Diamond Corp. in 2018 to form a larger Canadian producer. In recent years, Stornoway entered creditor protection and launched a sale and investment solicitation process in 2023 for its business and assets; in April 2024, it sold the Renard open-pit and underground mines plus infrastructure to Winsome Resources for lithium tailings storage amid uneconomical diamond production, retaining diamond inventory and mining equipment; Winsome terminated its option agreement in November 2025 due to lithium market conditions but continues exploring synergies with its Adina lithium project.