HPHT single crystal rough diamonds/uncut diamond for sale

SIZE: <1.0mm
1.0-1.8mm
2.0-3.5mm
>3.5mm
COLOR: >J
CLRRITY: >SI

USAGE: mainly being processed into polished diamonds of 57 surfaces for gemZhengzhou Sino-Crystal Diamond Co., Ltd., established in 2004, specializes in research and development, manufacturing and marketing of synthetic diamond and related products as well facilities. Sino-Crystal insists on combining manufacturing, research and development together to innovate and finally acquires the core technology of synthetic diamond, related facilities and auxiliary materials, and gets independent intellectual property. Sino-Crystal owns national authorized labs and the detection capability gets authorization by CNAS; the detection data are widely accepted by 170 nations in the world. The company won scientific and technological progress awards of Zhengzhou city and Henan province. On February 14th 2012, Sino-Crystal won second prize of 2011 National Scientific and Technological Progress Award for the project of Development of Facilities and Technique for High Grade Diamond by Catalyst Method together with Zhongyuan University of Technology and Zhengzhou Research Institute for Abrasives & Grinding Co., Ltd.