4-5 Carat Round HPHT Uncut Raw Diamonds DEF Color VVS VS SI Purity
For Loose Diamonds
Lab Created Diamonds Description
Lab-grown diamonds are also known as lab-made diamonds. There are
two main methods to make the laboratory breeding diamond: CVD and
HPHT.
Diamonds are considered the hardest material in the world.
According to the Mohs hardness scale, it is divided into 10 grades,
of which diamond is the highest grade. From the people know that
diamond is composed of pure carbon that day, more and more people
in laboratory breeding of high temperature and high pressure
diamond were studied. At present, the laboratory raw high
temperature and high pressure diamond industry develops rapidly and
is widely used in various industries and processing industries.
High temperature and high pressure synthesis of diamond technology
originated in the 1950 s, initially was applied in aviation and
military industry, nearly 10 years to achieve a qualitative leap in
technology, gem grade synthetic diamond both in quality and cost is
up to the level of the market.
Artificial diamonds, often referred to as lab-grown HPHT diamonds,
are created by mimicking the crystallization process of natural
diamonds. Natural diamond to form in the natural environment, often
mixed with other elements, which makes some natural diamonds are
not completely transparent, will show the specific color. For
example, some with a pink diamonds, some a bit blue, some with a
light yellow. HPHT diamonds are grown in a laboratory and have
fewer impurities than natural diamonds, so they are more pure and
transparent.
Natural diamonds take millions of years to form. Before a volcano
erupts, underground lava Wells about 150 to 200 kilometers deep can
slowly cool in the crater, because the crater is often blocked.
Pure carbon material pressure is 4.5 * 10 ^ 6 ~ 9 pa. When the
temperature drops to 1000 ~ 1250℃, natural diamond crystals are
formed. Deep inside the earth a few places have the physical and
chemical conditions of forming the diamond.
However, under the condition of the natural growth of the
production of natural diamond, can now be simulated in the
laboratory, the use of high temperature and high pressure (HPHT) or
chemical vapor deposition (CVD) techniques, in just a few weeks can
produce the lab production of gem grade diamond.
Parameters Of Lab Created Diamonds
| Product Name | Synthetic (Lab created) diamond |
| Material | Lab-grown |
| Color | DEF |
| Shape | Round |
| Technology | HPHT |
| Diamond Cut | Uncut |
| Payment Terms | 100% Payment In Advance |
| Diamond Carat Weight | 2CT-4CTS |
| Grade | VVS VS SI |
| Shipping way | DHL, FedEx, SF Express, UPS, EMS, TNT etc |
| M.O.Q | Negotiable |
| Delivery Time | 1-7 Working Days Depends On Quantity |
| Payment Methods | T/T, PayPal, Western Union, Bank Transfer |
| Used | Jewelry (necklace,ring,earring) |
| Application | For Cutting Lab Grown Loose Diamonds |
| Place Of Origin | Zhengzhou, China |
Characteristics Of Lab Created Diamonds
Lab grown diamonds in the chemical, optical and structure are the
same as the mining of 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, synthetic diamond and natural
diamond exactly the same, the only difference is that the formation
of their location.
Lab Created Diamonds Details
