Big size synthetic diamond (BSSD) means the high quality grade Diamond Grits which the diameter is from 0.8mm to 4.2mm. Compared with traditional synthetic diamond, BSSD has the characteristics of: Bigger grits diameter, higher quality grade, higher TI/TTI data, more transparent, better crystal shape, more pure color.

Big size synthetic diamond can be divided into six quality grades:

SMD691: Perfect crystal color, regular shape, good transparency, high strength and great thermal stability. Suitable for making cutting tools. Also can be used as jewelry and replace natural diamond.

SMD690: Consistent crystal color, regular shape, good transparency, high strength and high thermal stability. Suitable for making tools for sawing all kinds of hard stone &concrete, for geological drills. It also can be used as jewelry.

SMD680: Complete crystal shape, perfect cubic octahedron, good diaphaneity, high impact strength and thermal stability. Suitable for high grade cutting, drilling and grinding tools.

SMD660: Complete crystal shape with full surface, good diaphaneity and low impurity, high strength. Suitable for circular saws, frame-saw and geological broaches.

SMD640: Comparatively regular crystal shape, high mechanic strength, belonging to middle quality grade among them, containing more regular crystal. Suitable for grinding and free-cutting tools, grinding wheels which work with medium load .

SMD620: Comparatively regular crystal shape, sharp edges, low strength, belong to low quality grade among them. Suitable for grinding tools and wheels that work with low load.

Zhengzhou RJ Diamond Co., Ltd. (RJ) specializes in research, development, manufacture, and marketing of superabrasive materials and products. Our products include Diamond Wire Drawing Die Blanks, PDC,PCD&PCBN Cutting Tool Blanks, Diamond& CBN Micron Powder and other PCD and PCBN related products, which are widely used in various industries such as wire drawing, oil drilling, coal mining, geological prospeting and drilling, glass and ceramic cutting, abrasive tools and materials.

Based on the client to seek mutual benefit, RJ makes every effort to meet the production requirements of our valuable customers. In pursuit of a long-term development and partnership with each of our customers, RJ tries every means to offer the hardest and strongest polycrystalline products and the best services with the lowest prices to match in the industry. Contact us is easy. Per your needs, you may simply call, fax, email, or visit our website with your Orders, Price Quote Request, Sample Request, or Product Request.  Whatever your questions and requirements, we will respond immediately.

Zhengzhou RJ Diamond welcomes all opportunities to work with companies of all sizes worldwide, and looks forward to continuing close partnerships with our current customers and to forging solid partnerships with our new customers for the mutual benefit and further development of all involved.