On average, how much rock must mine workers process to recover a half carat of diamonds?

On average, mine workers must process more than a ton of rock to recover a half carat of diamonds due to the low concentration of diamonds found in most diamond-bearing ore. This reflects the challenging nature of diamond mining, where the quantity of rock that needs to be extracted and processed is substantial compared to the relatively small amount of diamonds obtained. The diamond extraction process involves sifting through large volumes of material to locate these gemstones, which occurs in areas where diamonds can be quite sparse, resulting in a high tonnage of rock processed for a small yield. Hence, stating that it requires more than a ton accurately reflects the significant efforts involved in diamond recovery.