After the mine experts research, stone formed in 2500000 to 1500000 years between, is the earth crust ejected magma from everywhere, leaving holes, after solidification, trickle into rock along the hole, which will slowly separated from silica, quartz, chalcedony and gradually deposited into a mixture of flint or opal. Stone color and pattern, it is gradually separated, is continuously deposited into colorless transparent body in the process of silica inclusions. Carefully appreciate the stone, which contain mountains and clouds, figures, flowers and birds fairy, bright color, changing hue. People love to be arranged in a water container, furnishings, Yu Shuzhai desk, it is elegant. Stone to the formation of gestation, after the original formation, transport and deposition of secondary gravel complex and lengthy three stage, and also suffered a lot is party was a merry. Stone, is a natural flower agate, mainly produced in Jiangsu province Nanjing city Liuhe District, is the largest stone origin. The production of stone quality, shape, pattern, color, artistic conception beauty was like, both six, known as" a national treasure, Chinese a must".