By 2004, what percentage of manufacturing for the diamond market was conducted in India?

By 2004, India had established itself as a dominant player in the diamond manufacturing industry, accounting for approximately 90 percent of the global diamond market's manufacturing. This significant percentage highlights India's evolution into the world’s leading center for diamond cutting and polishing, largely due to its vast labor force and expertise in the craft. India's capability to meet the global demand for diamonds at a competitive cost made it an essential hub for the diamond trade during that period.

The other answer choices reflect percentages that are either too low or too high. A figure of 70 percent would underestimate India’s influence in the market at that time, while 100 percent is unrealistic, as manufacturing was also occurring in other countries. Therefore, acknowledging the 90 percent figure as accurate illustrates India’s critical role within the diamond manufacturing sector during the early 2000s.