Zaozhuang ruizhong gem crystal material Co., ltd is invested by yantai huajing gem Co, ltd. It is registerred into stock company in zaozhuang in April,2011.

advanced technicians are 8 persons , The major product is rough ruby #1,#2,#3,#5,#8, alexandrite, blue   corundum,white sapphire in half boules.yantai company was built in 1976 blue corundum,white sapphire in half boules.yantai company was built in 1976.

The quantity of an annual is about 200 tons, 60% of which are exported to India, South Korea,Pakistan, Japan,the United States,France,product quality and foreign exchange,with Outstanding products.

Man-made and synthetic

Various sizes and grades are available

Mainly applied to ornament such as ring and necklace

color: #112, #106,#119,#105,#113,#114

Samples are free within a certain price range.

The material is aluminum oxide , the diameter is more than 18mm, the length is more than 60mm

The grade is  AB, C , E and F