The JCB JLD series of large single crystal diamonds refers to diamonds with a diameter greater than 1.0mm, synthesized under stringent high-temperature and high-pressure conditions. The product features a hexoctahedral crystal structure, high purity, excellent transparency, and consistent orientation. It exhibits high static pressure strength, impact toughness, thermal stability, and wear resistance. The JCB JLD series of large single crystal diamonds are widely used in the manufacturing of Single Point Diamond Dressing Pens, diamond rollers, grinding wheel dressing tools, gemstone processing tools, precious metal processing tools, optical material processing tools, and single crystal wire drawing dies, among other precision machining tools. They are extensively applied in high-tech fields such as aerospace, optical materials, jewelry processing, watchmaking, instrument manufacturing, optical fiber cables, and infrared technology.
| JLD91/90 Features: Regular crystal shape, complete hexoctahedral structure, almost free of impurities. Applications: Primarily used for manufacturing single crystal diamond wire drawing dies. |
| JLD80 Features: Regular crystal shape, complete hexoctahedral structure, with minimal impurities. Applications: Primarily used for manufacturing single crystal diamond cutting tools and single crystal diamond dressing tools. |
| JLD60 Features: Regular crystal shape, nearly complete hexoctahedral structure, with few impurities. Applications: Primarily used for manufacturing single crystal diamond cutting tools and single crystal diamond dressing tools. |
| JLD40 Features: Regular crystal shape, hexoctahedral structure, with higher impurity content compared to JLD60. Applications: Primarily used for manufacturing single crystal diamond dressing tools and diamond rollers. |
| JLD20 Features: Relatively regular crystal shape, with higher impurity content compared to JLD40. Applications: Primarily used for manufacturing diamond rollers and coarse diamond grinding tools. |
| JLD10
Features: Irregular crystal shape, with higher impurity content compared to JLD20. Applications: Primarily used for manufacturing coarse diamond grinding tools. |
Product Number Diameter, MM | JLD10 | JLD20 | JLD40 | JLD60 | JLD80 | JLD90 | JLD91 |
| 1.0(18/20) | Y | Y | Y | Y | Y | Y | |
| 1.2(16/18) | Y | Y | Y | Y | Y | Y | |
| 1.4(14/16) | Y | Y | Y | Y | Y | Y | Y |
| 1.6(12/14) | Y | Y | Y | Y | Y | Y | Y |
| 1.8(10/12) | Y | Y | Y | Y | Y | Y | Y |
| 2.0 | Y | Y | Y | Y | Y | Y | Y |
| 2.2 | Y | Y | Y | Y | Y | Y | Y |
| 2.4 | Y | Y | Y | Y | Y | Y | Y |
| 2.6 | Y | Y | Y | Y | Y | Y | Y |
| 2.8 | Y | Y | Y | Y | Y | Y | Y |
| 3.0 | Y | Y | Y | Y | Y | Y | Y |
| 3.2 | Y | Y | Y | Y | Y | Y | Y |
| 3.4 | Y | Y | Y | Y | Y | Y | Y |
| 3.6 | Y | Y | Y | Y | Y | Y | Y |
| 3.8 | Y | Y | Y | Y | Y | Y | Y |
| 4.0 | Y | Y | Y | Y | Y | Y | Y |
| 4.2 | Y | Y | Y | Y | Y | Y | Y |
| 4.5 | Y | Y | Y | Y | Y | Y | Y |
| 5.0 | Y | Y | Y | Y | Y | Y | Y |
| 6.0 | Y | Y | Y | Y | Y | Y | Y |
