A sparkling affair was held last week at a swanky venue in Rivonia, RoomFive, which saw some of the biggest celebs in SA attending.  It was the big reveal of the new Earth Jewellery Range by Sivana Diamonds, which proved that “Diamonds are a girl’s best friend” as ladies drooled over the range on offer. Posing with the gorgeous Lalla Hirayama Louise Carver,  Shashi Naidoo, Shashi Naidoo &am…