The history of the area that is now Gauteng can be traced back to the early 1800s when settlers originating from the Cape Colony defeated chief Mzilikazi and started establishing villages in the area.[10] After the discovery of gold in 1886, the region proceeded to become the single largest gold producer in the world and the city of Johannesburg was founded.[9][10] The older city Pretoria was not subject to the same attention and development.[10] Pretoria grew at a slower rate and was highly regarded due to its role in the Second Boer War.[10] The Cullinan Diamond which is the largest diamond ever mined was mined near Pretoria in a nearby town called Cullinan in the year 1905.[9]. (info: Wikipedia)