Square Shape E F G Color VS Purity 13.0 - 14.0 Carat CVD Rough
Diamonds For 4carat DEF Color Lab Diamonds
CVD Rough Diamonds Description
Lab created diamonds, as the name suggests, are diamonds made in a
laboratory.
Many people may think that because they are grown in a laboratory,
they are all fake diamonds. In fact, grow diamonds just uses
advanced technology to simulate the environment in which diamonds
are formed in the earth's crust, and then accumulate carbon atoms
layer by layer to form lab grown rough stones. The lab created
rough diamonds is no different from the natural diamond from the
underground. Actually its physical and chemical properties are the
same, and its molecular structure is the same, so there is no
reason to suspect that it is a fake diamond, because no one can
distinguish it with the naked eye.
High temperature and high pressure technology originated in the
1950s, and was initially mainly used in the aviation and military
industries. In the last ten years, the quality and cost of gem
grade synthetic diamond have reached the market level.
High pressure high temperature (HPHT) diamonds are made by
simulating the high-temperature and high-pressure conditions of
natural diamonds formed on the earth in the laboratory. This
process can produce a unique shape of laboratory-grown diamond
crystals, namely cubic octahedrons.
Synthetic diamond requires a carbon source, a high pressure of
about 50 to 80 KB, and a high temperature of about 1350 degrees
Celsius to 1800 degrees Celsius. In addition, a metal catalyst is
also required. The carbon source is melted in the metal catalyst
around it until it reaches the saturation point, after which they
crystallize to form synthetic diamonds.
Parameters of CVD Rough Diamonds
| CVD Rough Diamonds Details |
| Brand Name | Yuda Crystal |
| Name | CVD Rough Diamonds |
| Diamond Color | E-F-G |
| Diamond Clarity | VS |
| Diamond Carat Weight | 13.0-14.0carat |
| Diamond Cut | Uncut |
| Technology | CVD |
| Size | Customization |
| Shape | Raw, Square |
| Application | For Cutting Lab Grown Loose Diamonds |
| Place Of Origin | Zhengzhou, China |
| Delivery Time | 1 - 15 Working Days Base on Order Quantity |
| Payment Terms | 100% Payment In Advance |
| Payment Methods | T/T, PayPal, Western Union, Bank Transfer |
| Shipping way | DHL, FedEx, SF Express, UPS, EMS, TNT etc |
| M.O.Q | Negotiable |
| Diamond Type | Synthetic(lab created) |
| Location | Zhengzhou, China |
| Treatments Applied | None |
| Fire Dispersion | 0.044(Same as Natural Diamond) |
| Brilliance Refraction Index | 2.42(Same as Natural Diamond) |
| Relative Density | 3.52(Same as Natural Diamond) |
| Chemical Composition | Carbon(Same as Natural Diamond) |
| Moh's Hardness | 10(Same as Natural Diamond) |
CVD Rough Diamonds Introduction
Natural diamonds are created by nature and are the result of high
temperature and pressure formed over billions of years. The Lab
Grown Diamonds are produced in the laboratory, usually in a few
weeks. The chemical difference between the two is same.
So how do you distinguish between Lab Grown Diamonds and natural
diamonds?
There is no obvious difference between the Lab Grown Diamonds and
natural diamonds. Even professional gemologists need special
equipment to identify them. By zooming in, professionals will be
able to discern subtle contrasts in diamond inclusions grown and
mined in the laboratory.
| The Difference Between Lab Diamond And Natural Diamond |
| Properties | Earth Mined | Lab Created |
| Guaranteed Conflict-Free | No | Yes |
| Hardness (MOHS) | 10 | 10 |
| SP3 Carbon Diamond Bonds (%) | 100% | 100% |
| Internal Crystal Structure | Face-Centered Cubic | Face-Centered Cubic |
| Hardness Comparable | 2.42 | 2.42 |
| Relative Diversity | 3.52 | 3.52 |
| Color Diffusion | 0.044 | 0.044 |
| Color | Various Grades | K to D grades |
| Price | $$$$$ | $$$ |
CVD Rough Diamonds Details
