In November 2003, De Beers announced that in celebration of the mine's centenary, Premier mine would usher in the new era with a new name. Premier mine, as it had been known for the past 100 years became Cullinan Diamond mine. The name change was first announced by General Manager of Cullinan Diamond mine, Hans Gastrow, as part of the mines' centenary celebrations. The name change was aimed at recognising the brand that has become associated with Premier mine.

The name of the village of Cullinan had its beginnings in 1903 when it was named after the pioneer and entrepreneur Sir Thomas Cullinan. It later came to the fore again in 1905, when the largest pure rough diamond was discovered and named the Cullinan Diamond. The Cullinan Diamond played a significant role for Premier mine and De Beers when it received global recognition as a gem of the British Crown Jewels. The name change places emphasis on the link of this great Diamond mine with what is now the famous Cullinan brand.

About the region
The population in the municipal area (Nokeng Tsa Taemane) is about 52 000. Unemployment is relativey high due to the lack of major investment. The primary employers in the region include the mine, the state, parastatals and the hospitality industry.The mine has attempted to stimulate economic activity in the area by maximising local recruitment, procurement and social investment.