Lab Grown Diamond

Lab-grown diamonds are synthetic diamonds created under the same conditions as natural diamonds. While natural diamonds form over long periods deep within the earth, lab-grown diamonds are produced by replicating that environment in a laboratory. This difference in the production process is the only distinction. Because they have exactly the same composition and characteristics as natural diamonds, even professional gemologists find them difficult to distinguish. The world is now focusing on this reasonable, sustainable, and peaceful "new era of brilliance."
01. Differences from Natural Diamonds
02. Features of Lab-Grown Diamonds
03. Methods of Producing Lab-Grown Diamonds

01.
Differences from Natural Diamonds

Lab-grown diamonds have the same chemical, physical, and optical properties as natural diamonds. Both are composed solely of carbon (C), and values such as hardness, refractive index, and dispersion are all identical to natural diamonds. Additionally, like natural diamonds, grading reports can be issued.

Natural Diamond

Lab Diamond

Simulated Stone / Imitation Stone

	Natural Diamond	Lab Diamond	Cubic Zirconia	Moissanite
Chemical Composition	C	C	ZrO2	Sic
Crystal Structure	Isometric	Isometric	Isometric	Hexagonal
Refractive Index	2.42	2.42	2.20	2.65
Mohs Hardness	10	10	8.25	9.25
Density	3.52	3.52	5.70	3.21
Optical Analysis	0.044	0.044	0.066	0.104
Thermal Conductivity	HIGH	HIGH	LOW	HIGH

02.
Features of Lab-Grown Diamonds

reasonable

Because there are no mining costs and supply is stable, lab-grown diamonds are less expensive compared to equivalent natural diamonds. This price difference tends to be especially significant for rare colored diamonds.

Sustainable

Lab-grown diamonds do not require mining, so their impact on the natural environment (soildegradation, water pollution,and carbon dioxide emissions) is said to be minimal.

NO CONFLICT

Thanks to the Kimberley Process, most diamonds currently traded are proven to be conflict-free, but lab-grown diamonds have even clearer distribution channels, guaranteeing their ethical nature.

03.
Methods of Producing Lab-Grown Diamonds

There are two methods for producing lab-grown diamonds: High Pressure High Temperature (HPHT) and Chemical Vapor Deposition (CVD).

High Pressure High Temperature (HPHT)

HPHT is a method that artificially recreates the high temperature and high pressure environment of the earth’s mantle where natural diamonds form. Cylindrical carbon is subjected to 55,000 atmospheres of pressure and temperatures above 1,400°C to produce diamonds. Previously, only small diamonds could be produced, but advances in technology now allow for the creation of larger diamonds. This method is currently the mainstream production technique for lab-grown diamonds.

Chemical Vapor Deposition (CVD)

CVD is a method of growing crystals inside a vacuum chamber at very low pressure. Thin slices of diamond are used as seeds, and methane gas containing carbon is energized by microwaves to grow diamond layers. Because the type and amount of scientific impurities can be finely controlled, this method allows precise control over the size, purity, and color of the diamonds produced.