While fracture filling as a method to enhance gems has been found in gems over 2,500 years old, the diamond's unique refractive index required a more advanced solution than simple wax and oil treatments. This technology became available roughly 20 years after the time the laser drilling technique was developed.
The MANCOSA MBA is an internationally recognised postgraduate academic programme and, one of the most highly recognised in Southern Africa.
In the 1960s, the level of CO2 was around 1,000 times higher than in 1751. In 2012, over 35 billion metric tons of carbon dioxide was emitted globally. In 2014, the largest CO2 producers included the United States and the four members of the BRIC countries.Brazil, Russia, India and China were all ranked among the five largest emitters, with China taking the top spot.Second-ranked United States was also listed as one of the biggest polluters worldwide in per capita terms in 2012.n the 1960s, the level of CO2 was around 1,000 times higher than in 1751. In 2012, over 35 billion metric tons of carbon dioxide was emitted globally. In 2014, the largest CO2 producers included the United States and the four members of the BRIC countries.