Tens of thousands of years ago, the Changle active volcanic activity created a rich sapphire resources, these valuable resources are found in 1989, after the jewelry in the government sector and the wider efforts of employees, now has Changle China Gem City development of the nation's largest distribution center for natural gemstones. Sapphire crystals are mostly translucent, Shandong, with a strong light of (commonly known as a fire), hard wear, the net is good, crack lock small, out into the high rate; gem variety, specific gems and more. By the major gemological characteristics can be divided into five series, a total of about 20 species, with sapphire, followed by the ruby, yellow sapphire, star sapphire brown. Less because of internal defects in Shandong sapphire, is a high-quality sapphire.