Caustic Fusion and MiDa

As the only caustic fusion supplier in South Africa, we are able to recover diamonds up to 75um from drilling samples or other exploration samples. We guarantee that the process is safe and environmentally responsible. This process involves gas furnaces for rapid and efficient heat transfer. Strict operating procedures are followed to ensure the highest possible recovery of microdiamonds. Approximately 1 g of residue is produced from every 10 kg of melted sample. A 90% recovery of tracers is required. The caustic fusion residue is then sent to the MiDA laboratory for separation of the microdiamonds from the residue. Diamond classifiers perform microscopic classification to recover both synthetic diamond tracers and natural diamonds up to 75m², following Quality Management System (QMS) procedures. The color, clarity, and morphology of each diamond are determined and reported. Microdiamonds are weighed using a 7-decimal-place electronic microbalance and then placed on sample cards. All X, Y, and Z dimensions of each diamond are measured using a calibrated reticle in the microscope eyepiece, which is subsequently converted to mm. The final results are presented to the client in a complete sample report.