从济南乘车沿济青高速公路东行170公里,就是著名的“宝石之都”昌乐县。1800万年前,100多座火山在地壳热力的催动下群体爆发,于是造就了如今的“宝石之都”。方圆450平方公里的大地之下,蕴藏着数亿克拉的天然蓝宝石。这独特而丰厚的瑰丽资源,吸引着世人的目光,也促动着昌乐的热身。几年间,昌乐大力实施“品牌带动”战略,打造出了“宝 From Jinan Jinan Economic Highway along the eastbound 170 kilometers, is the famous ”Gem City “ Changle County. Eighteen million years ago, more than 100 volcanoes erupted under the heat of the crust, creating what is now the ”capital of gems.“ A radius of 450 square kilometers under the earth, contains hundreds of millions of karats of natural sapphire. This unique and generous magnificent resources, to attract the attention of the world, but also to promote the warm-up Changle. A few years, Changle vigorously implement the ”brand driven “ strategy to create a ”treasure