Explanations:The diamond industry in Gujarat has developed significantly over the years, with Surat being the primary center for diamond cutting and polishing. Surat is often referred to as the "Diamond City" due to its dominant role in the global diamond trade. The city has a long history of diamond cutting and polishing, which dates back to the 19th century. The industry in Surat has grown due to the availability of skilled labor, favorable government policies, and the presence of a well-established infrastructure for diamond processing.
Bhavnagar and Amreli are also important districts in Gujarat that have contributed to the growth of the diamond industry. These cities have developed their own niche in the industry, with a focus on specific aspects of diamond processing and trading. The presence of these cities alongside Surat has helped to create a robust and diverse diamond industry in Gujarat.
The diamond industry in Gujarat is not limited to just these cities; other districts in the state have also seen growth in diamond-related activities. The industry has become a significant contributor to the state's economy, providing employment to a large number of people and generating substantial revenue through exports.
It is important to note that while other states in India have some involvement in the diamond industry, Gujarat stands out as the primary center for diamond cutting and polishing. This is due to the historical development of the industry in the state, the availability of skilled labor, and the presence of a well-established supply chain and infrastructure.
Therefore, the correct answer is that the diamond industry has developed well in Surat, Bhavnagar, Amreli, and other districts in Gujarat. This reflects the significant role that these cities and districts play in the global diamond trade and the economic importance of the industry to the state.