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.
What is ASTM International? ASTM International is one of the largest voluntary standards developing organizations in the world. We are a not-for-profit organization that provides a forum for the development and publication of international voluntary consensus standards for materials, products, systems and services. Our volunteer members represent producers, users, consumers, government, and academia from more than 140 countries.