Lab Grown Diamonds

[They] are real diamonds. They have the same optical, chemical, thermal, and physical features.

– Matthew Hall, Director, Gemological Institute of America (GIA)

WHAT ARE LAB GROWN DIAMONDS?

Lab Grown Diamonds are just like test tube babies grown from a single seed of Diamond under the same heat and pressure like in the crust of mother earth. They are ecologically friendly as they do not scar the earth with mining. Since they avoid the stigma of blood-diamonds there has been a worldwide acceptance for this category. And, most importantly, they are more uniform, yet cheaper than earth-mined diamonds.

ARE LAB-GROWN DIAMONDS REAL DIAMONDS?

Lab-grown diamonds are chemically and physically identical to natural diamonds, and are just as hard. Diamonds that were found in nature take billions of years to form, while lab-grown diamonds can be formed in just a few weeks.

PROPERTIES GROWN MINED
CONFLICT-FREE YES NO
HARDNESS (MOHS) 10 10
SP3 CARBON BONDS 100% 100%

HOW ARE LAB-CREATED DIAMONDS GROWN?

Lab-created Diamonds There are two processes labs use to grow diamonds - High Pressure-High Temperature (HPHT) and Chemical Vapor Deposition (CVD).

HPHT diamonds are made using one of three manufacturing process: a belt press, the cubic press, and the split-sphere (BARS) press. All of these processes create an environment of extremely high pressure and temperature conducive to diamond growth.

An HPHT diamond begins as a small diamond seed that is placed into carbon. Using one of the manufacturing processes above, the seed is exposed to temperatures of about 1500 degrees Celsius and pressurized to approximately 1.5 million pounds per square inch.

The pure carbon melts and starts to form a diamond around the starter seed. It is then carefully cooled to form a pure carbon diamond.

A CVD diamond begins as a thin slice of diamond seed, which is often an HPHT produced diamond. The diamond seed is placed in a sealed chamber and heated to around 800 degrees Celsius.

The chamber is filled with a carbon rich-gas, like Methane, and other gases. The gases are ionized into plasma using technology similar to that of microwaves or lasers. The ionization breaks the molecular bonds in the gases, and the pure carbon adheres to the diamond seed and slowly crystallizes.

IS IT AVAILABLE IN ALL COLOR AND CLARITY?

Yes lab grown diamonds are available in all color and clarity just like mined diamonds but Fiona believes in quality and so with Fiona jewellery we use only EF Color and VVS – VS clarity with excellent cut to give the best to its clients.

 

?>