Showing posts with label laboratory madediamonds. Show all posts
Showing posts with label laboratory madediamonds. Show all posts

Monday, 17 October 2016

Facts about Lab Grown Diamonds

1) Lab Grown Diamonds are chemically, physically and optically exactly the same as mined diamonds.
2) The only difference between Lab Grown Diamonds and mined diamonds is the point of origin.Mined Diamonds are formed inside the earth’s surface,while Lab Grown Diamonds are created in the laboratory.
3)Lab Created Diamonds are ecofriendly and contribute to green enviornments.
4)Lab grown diamonds are created without harming native communities,hence they are conflict free.
5)Lab created Diamonds are available in variety of colours.
6)Lab Made Diamonds are 20-30% cheaper than mined diamonds.
7)As they are grown inside the laboratory they are unlimited in sipply.
8)Scientists and gemologists can accurately replicate the exact qualities of mined diamonds.
9)They are available in different cuts,sizes,colour and shapes.
10)Lab Grown Diamonds are not fake.They are diamonds grown from a diamond seed.
11)They are a revolution in the diamond industry.They have many advantages over mined diamonds.
12)The global demand for Lab created diamonds is increasing especially in countries like United States,United Kingdom,India.
13)All Lab Grown Diamonds are graded as per same parameters and specifications as mined diamonds.
14)It is virtually impossible for the naked eye to tell the difference between lab grown and mined diamonds.
15)HPHT(High Pressure High Temperature) and CVD(Chemical Vapor Deposition) is used for growing lab created diamonds.

HPHT Diamonds

Diamonds are precious stones which are found inside earth’s surface.Diamonds can also be produced inside the laboratory by using HPHT process(High pressure High Temperature) and CVD(Chemical Vapour Deposition).Such diamonds are called as Lab Grown Diamonds or Lab Created Diamonds.
HPHT Diamonds and CVD Diamonds create diamonds which are chemically, physically and optically exactly the same as mined diamonds.

HPHT is a Diamond Enchanement Process used to enchance natural diamond’s colour by making the natural diamond go through high amounts of pressure and high temperatures.HPHT Process creates diamonds that are of different colour than original diamonds.
In HPHT Process 70,000 atmospheres pressure(same pressure that is found inside mines) at temperatures upto 3,700°F.HPHT Diamonds can be used for 1)Creation of Synthetic Diamonds 2)Color Modification in Natural Diamonds.
In HPHT Process a trained gemologist places the diamond into a “containment cube” that is surrounded by heating mechanisms.Pressure is applied to the cube.By this process we get a diamond in its most mature,desirable and colourless state.Because of the high amount of pressure HPHT Colored treated diamonds are larger than 0.50 carats.The smaller diamonds cannot handle this extreme pressure and can implode.
Two main press designs are used to supply required temperature and pressure.
Belt Press:-High Pressure is created by using two high strength pistons which provide equal pressure in opposing directions.
Cubic Press:-This technique uses many pistons that provide pressure from many different directions.
HPHT can only be used on high clarity diamonds like VVS1,VVS2,VS1,VS2 and flawless.  
The HPHT diamond maturation process is permanent and irreversible.It is a permanent colour enhacement process.
The difference between a natural colour diamond and HPHT Coloured diamond can be made by freezing the diamond with liquid nitrogen.The cool diamond is excited with a laser to see the colour that appears.

A spectrometer is used to measure the difference in the light absorption patterns and excitation peaks.
Colored Diamonds are very rare and extremely expensive.With HPHT Process these diamonds are affordable and can be bought by many people.