Pretoria & Cullinan Diamond Mine Tour The Cullinan Diamond Mine is a working mine and above ground and underground tours are available….This is where the largest diamond (3,565 carats) was unearthed.Drive through the Administrative Capital of South Africa to the Union Buildings, Paul Kruger Museum and the Voortrekker Monument.Tour highlights:Tour of the Pretoria Diamond MineUnion BuildingsPaul Kruger MuseumVoortrekker Monument Make a Booking Enquiry:Name and Surname *Email Address *Phone NumberMessage0 / 180Send Message