世界第一颗金刚石是在南印度被发现的。自发现后，由于贸易往来，金刚石从印度运往世界各地。印度于公元前150年就与我国有贸易关系。英国人兰金曾绘过一幅古代贸易路线地图，他认为古代金刚石有很大可能是按这一路线传播的（图1）。 The world’s first diamond was discovered in South India. Since its discovery, diamonds have been shipped from India to other parts of the world due to trade. India had a trade relationship with China in 150 BC. Rankin, an Englishman, once painted a map of the ancient trade routes. He believes that there is a great possibility that ancient diamonds will spread along this route (Figure 1).