Lab grown diamonds

Diamond that are light on the pocket

Diamonds are the hardest substance on Earth, with a Mohs scale of 10. The number 9 on the Mohs scale, Corundum, is 4 times lesser dense than diamonds. Due to this hardness, diamonds are extremely resistant to scratching and fracturing. These qualities of diamonds make it favourable to be used for cutting, grinding, shaping and polishing other hard materials including other diamonds. Notwithstanding its qualities, diamonds are technically formed of a single element-Carbon, just like the graphite of our pencils but with a high melting point of 3815 Degrees Celsius. Almost all natural diamonds contain impurities, in the form of slight colour differences due to presence of other elements like Boron and Nitrogen which give them blue and yellow colours respectively. Diamonds which have been exposed to radiation generally are green in colour.


We, at Riddhi Corporation, have been a pioneer in producing lab-grown diamonds since 2014. We have a dedicated Research and Development department of 15 specialists which was set up 11 years ago and which has set itself a target of growing diamonds up to 50 carats within 1 year.

We always strive to ensure that our diamonds are of consistent quality. We intend to ensure uniformity in quality by releasing an assortment of similar quality diamonds every month for sale. Currently, we sell both raw and polished lab-grown diamonds. Additionally, we are also in the business of manufacturing jewellery only on order basis.

We intend to popularize lab-grown diamonds for their benefits and price competitiveness.

We are currently involved in the business of the production, manufacture and sale of both Type 1 and Type 2 diamonds.


Industrial diamonds are renowned for their thermal conductivity and hardness. The 4C gemological criteria are irrelevant for industrial diamonds. About 80% of mined diamonds are unsuitable for use as gems, and are used for industrial use. The hardness of industrial diamonds is primarily used for cutting machinery and the like.

Synthetic diamonds have been in production since the 1950s. Even before that, numerous western scientists have tried to create artificial diamonds. It is estimated that about 98% of the diamonds used for industrial purposes are synthetic. It is a common misconception that synthetic diamonds are of inferior quality, but in reality they contain almost all of the qualities of real diamonds.

High Pressure High Temperature diamonds are made when a high purity carbon source and a solvent metal are introduced to diamond seeds and pressed at a high temperature of above 1400 Degrees Celsius. The resultant diamonds are much easier to cut as they are manufactured according to predetermined specifications.

Chemical Vapour Deposition diamonds are made when circumstances are created to make carbon atoms in a gas to settle in a substrate in a crystalline form. Synthetic diamonds made with these processes have qualities like hardness, thermal conductivity and electron mobility which can be far superior to those of naturally occurring diamonds.

Lab grown diamonds are eco-friendly, cause no impact on the environment or any kind of pollution and are of much better quality than mined diamonds. Due to these qualities, lab-grown diamonds are known as ‘green diamonds’. The difference between mined and lab-grown diamonds is indistinguishable to the naked eye, only a trained gemologist using specialized equipment can spot the difference.

The colour of the diamond is a result of impurities in the diamond. As mentioned earlier, certain elemental impurities give diamonds distinctive colours. Diamonds are graded on a scale of D to Z depending on the depth of the colour. Coloured fancy diamonds are extremely sought after and they are sold for high prices at auctions.

Diamonds have always been treasured for their clarity, beauty and opulence. Traditionally worn by nobility, diamonds are now used for a variety of new uses, besides being used for jewellery. Presently, diamonds come from two sources-mined diamonds and lab grown or green diamonds.

A diamond is valued by 4C’s-Cut, carat, colour and clarity. Diamonds are measured in a carat which is the mass of the stone, with 100 grams indicating 1 carat and so on. A diamond is cut to enhance its faceted look, thereby losing some of its carat value. The proportion, symmetry and polish of a diamond affect the quality of its cut.


The difference between mined and lab-grown diamonds is indistinguishable to the naked eye, only a trained gemologist using specialized equipment can spot the difference. The price difference between mined and lab-grown diamonds is in the range of 30-70%, with lab-grown diamonds being cheaper and free from impurities.

It is a common misconception that lab grown diamonds are of inferior quality, but with advanced technology, they are made of even better quality than mined diamonds. There is also the misplaced notion that diamonds are expensive due to polishing and other processes. But as lab grown diamonds are made from scratch, it is relatively cheaper. Due to the price difference as well as the superior quality, lab-diamonds are being increasingly preferred over mined diamonds.

The difference between mined diamonds and synthetic diamonds are poorly defined, and their use depends upon market conditions, where slowing demand for industrial diamonds is substituted for gemstones and vice versa.90% of industrial grade diamonds are currently produced in China. The hardness of industrial diamonds is primarily used for cutting machinery and the like.

Lab Created Diamonds and Other Artificial Diamond like Materials

What is the first thing that comes to your mind when you hear the word 'lab created diamonds'? Most of us would think that these diamonds are artificial and of inferior quality. However, this is a misconception that is ruling the minds. Labs created diamonds are optically, chemically and physically the same as mined diamonds that are extracted from the earth. As far as artificial diamonds are concerned, there are stimulants like cubic zirconia and moissanite.

Cubic zirconia and moissanite are diamond stimulants but cannot be called true carbon crystals. They do inherit the same physical and chemical properties as do natural diamonds do and therefore are sold for a much lower price than a lab created diamond or a mined diamond. In fact these diamond stimulants can be distinguished using a hand held device or even with the naked eye by an expert.

Pure Lab Grown Diamonds

There have been many attempts to create pure carbon lab grown diamonds in a controlled environment ever since the late 1800s. Presently, we have succeeded in producing lab grown diamonds in a controlled environment to such perfection that they are indistinguishable from mined diamonds to the naked eye. To differentiate between the two, one needs the services of a specialist that too with help of special equipment's to distinguish a mined diamond and a lab grown diamond.

Currently, there is a lack of awareness about the presence of lab grown diamonds in the market. Most novice customers associate it with being 'fake' and of cheap quality but this is not the case. Currently the market for pure carbon lab grown diamonds is mostly for industrial purposes, but things are slowly changing and people are adapting the use of lab grown diamonds. People are now being more aware of the fact that they can get the same quality or even better by spending far lesser amount buying a lab grown diamond than buying a mined diamond. Moreover most importantly using a lab grown diamond would not harm the environment and is sustainable option. However it goes without saying as we all know the loop holes of mined diamonds lead us to indirectly and unknowingly sponsoring civil unrest.

Man Made Diamonds vs. Mined Diamonds

Man Made Diamonds are grown in controlled environment with the best manufacturing processes available with complete professionalism. Man Made Diamonds are grown by creating or imitating the conditions below the earth surface where the mined diamonds are created, however the production of

Man Made Diamonds is non-controversial in all other ways. On the other hand, the mining of diamonds which were formed deep inside the Earth&ap's crust billions of years ago is a highly complex task. In West Africa, there are many illegal diamond mines operated by armed militias who rebel against UN-recognized governments and fund their operations using the sale of these mined diamonds. There have been many checks and balances put in place to stop this sale of 'blood diamonds' (which also includes the use of child labour) but everything has been in vain.

Mining for diamonds also contributes a lot to pollution and greenhouse gases; whereas Man made diamonds are eco-friendly. The entire diamond mining industry has been controlled by a set of oligopolistic companies which control the amount of diamonds they sell every year along with their prices. Man Made Diamond companies on the other hand are quite small and localized and cannot match the scale of these MNCs, but they do provide diamonds which are of a much better quality than mined diamonds.

Diamond Manufacturing Techniques

HPHT (High Pressure High Temperature) diamonds

The HPHT (High Pressure High Temperature) Diamonds mimics the way diamonds are produced naturally deep inside the Earth's crust. Special machines are used to build up the pressure of almost 60,000 atmospheres and temperatures of 2,500 degrees Celsius to start with the growth of HPHT diamonds. Special growth cells which contain elements needed for growing a diamond like highly refined graphite and a catalyst mixture consisting of metals and powders are planted into the HPHT chamber where consistent temperature increases up to 1,300 Degrees Celsius and more than 50,000 atmospheres of pressure is applied. The catalyst inside the cells transforms the cells from solid to molten form.

Within a few days and after a few conditions are met, the cooling process begins. This takes a few days and allows the carbon atoms to build on the atom seed. The cell is removed from the HPHT machine only when it is deemed to be sure that the growth cycle has been completed. The new rough HPHT diamond is then extracted and cleaned for the final cutting and polishing.

HPHT diamonds are then polished in similar way as that of Mined Diamonds along with other manufacturing processes. These Lab Grown Diamonds are used for both industrial as well as Gems & Jewelry sector.

CVD (Chemical Vapor Deposition) diamonds

CVD (Chemical Vapor Deposition) Diamonds are produced by heating ultra-rich carbon gases like methane in a controlled chamber until they allow the carbon atoms in the gas to separate. These carbon atoms then fall into a diamond substrate and build up layer-by-layer until they form rough CVD diamonds. This process takes between 6-10 weeks to yield gem grade IIA diamonds.

These CVD diamonds are also of much better quality than regular mined diamonds. However many people are not aware of the fact that these Lab Grown Diamonds are available to them at much better prices than mined diamonds.

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