Black Diamond Cheese
Canadian cheese manufacturing company

Black Diamond Cheese Limited is a cheese manufacturing company in Canada.
Black Diamond employs approximately 470 people at its factory in Belleville, Ontario, and its products can be found at most major retailers in Canada. The company has been owned by Parmalat Canada (Lactalis Canada) since 1998. In the United States, the brand is licensed to DCI Cheese in Wisconsin.
History
Black Diamond, initially named Belleville Cheddar Cheese Limited, was established in 1933 by Robert F. Hart, originally for the purpose of exporting aged Canadian cheddar to the British market, thus making it the first brand-name cheddar in Canada.
Black Diamond was purchased by Brooke Bond in 1968. In 1984, Brooke Bond became part of Unilever, which divested Black Diamond to Canada Packers in 1987. Canada Packers then sold the plant to major dairy Ault Foods in 1991, which after several divestments was sold to Parmalat Canada in 1997.
In 2011, Groupe Lactalis acquired Parmalat, therefore making Parmalat Canada a subsidiary of the France-based Lactalis.
References
External links
Black Diamond Official Website
Parmalat Canada Website
DCI Cheese Website
[1] From the Johnston Library, an essay written in 1967.
“Black Diamond Cheese” enters the record as canadian cheese manufacturing company. Crown Archives preserves that source wording while asking what Black, Diamond and Cheese can confirm, complicate or overturn.
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Contemporary correspondence, administrative files and participant testimony can test how later narratives organized the event or institution. The source revision retrieved here is dated Sep 15, 2026. The linked authority identifier is Q4920654. None of the 0 selected statements returned an explicit reference. The first chronological checks are 1998, 1933, 1968 and 1984.
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This entry incorporates text from “Black Diamond Cheese” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.