On average, to extract one carat of diamonds, at least 2 tons of Kimberlite must be processed and in alluvial deposits, 20 tons of sand must be sifted.

How is a lab-grown diamond created?

HPHT method

Over the years, thanks to advanced technology and sophisticated machinery, humans have managed to recreate in the laboratory the conditions that naturally give rise to diamonds. By subjecting a diamond "seed" to a carbon source, generally graphite, at high pressure and temperature, the carbon atoms arrange themselves according to the diamond structure, and in a short period of time, the growth and formation of a rough diamond occurs.

This method is called HPHT (High Pressure High Temperature). Once a rough cultured diamond is obtained, it will be cut with the same techniques used for natural diamonds.

CVD method

Another method for creating diamonds is Chemical Vapor Deposition ( CVD ). A diamond "seed" is introduced into a highly controlled temperature growth chamber, where a gas containing hydrogen and carbon molecules (usually methane) is added. The gas decomposes, releasing a cloud of carbon that is deposited on the seed, growing layer by layer, thus creating a rough diamond.
This method has also been used to create the extremely rare yellow, pink, and blue diamonds. Even lab-grown diamonds can exhibit varying color and clarity characteristics during their formation. As with natural diamonds, the rough diamond will be expertly cut by a skilled craftsman, achieving the characteristic fire and brilliance that only a diamond can provide.

Lab Grown Diamond Valuation

Even in this case there are no differences, the evaluation criteria used for Cultured Diamonds are the same as those adopted for mined Diamonds. The combination of 4 parameters (4Cs) is what attributes the value to a Diamond.

Carat (carat): all other things being equal, the higher the carat weight, the higher its value. It's important to remember that the carat indicates the weight, not the diameter, of a diamond; therefore, diamonds of the same diameter can have different weights. One gram equals 5 carats.

Color (color) The more colorless a diamond is, that is, the whiter it is, the higher its value. Color classification occurs alphabetically from D to Z. Just as in nature, Lab-Grown Diamonds exist in pink, blue, and yellow colors.

Clarity (Purity) The presence of inclusions, their size, and location, as seen under 10x magnification, will give a diamond a different value. A diamond is defined as "internally clear" when inclusions are not visible under 10x magnification.
As with natural diamonds, the presence of any small inclusions does not affect the beauty and brilliance of the diamond.

Cut (Cut) The quality of the cut is also fundamental in cultured diamonds.
Only a well-cut diamond can reflect almost all the light that enters it, giving it brilliance and brilliance. The difference in value between a diamond with an excellent or very good cut and one with a good or poor cut is enormous.