Henan Yuda Crystal Co.,Ltd
Henan Yuda Crystal Co.,Ltd
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2.5ct-3ct DEF Color VVS VS Clarity Lab Grown Diamonds For Jewelry
Lab Created Diamonds Description
Lab created diamonds refers to the use of artificial methods to simulate the characteristics of natural diamond crystal generation and manufacturing of diamond, and natural diamond in nature is no two. From the physical properties, it can be seen that lab created diamond and natural diamond have exactly the same physical parameters, and are considered as real diamonds, both carbon. Mossang drill composition is mainly silicon carbide, its hardness is close to diamond, but the refractive index is much higher than diamond, easy to distinguish by the naked eye. Price: take the retail price of one carat as an example, natural diamond is 50,000-100,000 yuan, lab created diamond is 10,000-30,000 yuan, mossang diamond is 0.01-3,000 yuan. Raw stone is around 20-25% of the retail price. It can be seen that the cost performance of lab created diamonds is higher and the price is cost-effective.
In December 2019, with the launch of NGTC two versions of enterprise standards, more and more people in the industry began to accept the name of "lab-grown diamond". The recognition of lab created diamond continued to soar, and the development of lab created diamond industry standard officially entered the track.
Mainly through high temperature and high pressure HPHT and CVD two technologies. Both technologies have their own advantages: HTHP is more efficient, color is better, and CVD purity is better. To produce a 1-carat lab created diamond, the growth cycle takes only a few days because the high temperature and high pressure (HTHP) is formed by connecting carbon atoms to carbon atoms. Chemical vapor deposition (CVD) is the dissociation and growth of carbon containing gas in diamond seed crystals, gradually accumulating and proliferating, which requires a growth cycle of several months. High temperature and high pressure (HTHP) require metal catalyst as solvent to participate in the reaction, so it will have some influence on the purity of diamond, chemical vapor deposition (CVD) purity is better. At present, China's Yellow River cyclone, Red arrow and other enterprises are using HPHT method to produce diamonds, only Shanghai Zhengshi to take CVD method.
Parameters Of Lab Created Diamonds
| Product Name | Synthetic (Lab created) diamond |
| Material | Lab-grown |
| Color | D-H |
| Size | 35PCS/CT-5CTS/PC |
| Grade | VVS VS SI |
| Used | Jewelry (necklace,ring) |
| Application | For Cutting Lab Grown Loose Diamonds |
| Place Of Origin | Zhengzhou, China |
Characteristics Of Lab Created Diamonds
Lab-grown diamonds are chemically, optically and structurally identical to mined diamonds. What does that mean?
| The Difference Between Lab Diamond And Natural Diamond | |||
| Attribute | Lab Created Diamonds | Natural diamond | Distinction |
| Chemical composition | C(carbon) | C(carbon) | No |
| Refractive index | 2.42 | 2.42 | No |
| Relative density | 3.52 | 3.52 | No |
| Dispersion | 0.044 | 0.044 | No |
| Hardness value | 90 GPA | 90 GPA | No |
| Thermal conductivity | 2*103 W/M/K | 2*103 W/M/K | No |
| Thermal property | 0.8*10-6 K | 0.8*10-6 K | No |
| Light transmittance | DEEP UV TO FAR TR | DEEP UV TO FAR TR | No |
| Resistivity | 1016 OHM-CM | 1016 OHM-CM | No |
| Compressibility | 8.3*10-13 M2/N | 8.3*10-13 M2/N | No |
From a scientific point of view, cultivated diamonds are exactly the same as natural diamonds, the only difference being where they are formed.
Lab Created Diamonds Details
