We craft your dream into reality. Our painstaking efforts in crafting lab-grown diamonds make us unique and valuable. We wholeheartedly follow “The customer's wish is our command” and craft diamonds that the customer wants.
The raw diamonds are created by CVD processes. We produce diamonds, cut and polished in-house to maintain the highest standard and precision and we distribute through our offices and distribution partners. We craft them into a diverse range of lab-grown diamonds with different cuts, shapes, colors, and facets.
We keep in mind the 4C’s- Cut, Clarity, Color, and Carat and inculcate the 4C’s in our craft. Our talented team of diamond makers put in their sweat and intricate craftsmanship for crafting a diamond that reflects you.
Meraya Lab-Grown Diamonds is a leading manufacturer of high-quality lab-grown diamonds.
At Meraya, we are committed to providing our customers with diamonds that are not only beautiful and affordable but also ethically and environmentally responsible. Using advanced technology, we are able to replicate the conditions found in the earth's mantle where diamonds naturally form, resulting in diamonds that are chemically, physically, and optically identical to natural diamonds.
Our diamonds are grown in a controlled environment and are available in a variety of cuts, colors, and sizes. We are proud to offer our customers a wide selection of lab-grown diamonds that are perfect for any occasion.
In addition to our commitment to producing top-quality diamonds, we are also dedicated to sustainability and social responsibility. Our lab-grown diamonds have a significantly smaller carbon footprint than natural diamonds and do not contribute to conflict or human rights abuses.
We are proud to be at the forefront of the lab-grown diamond industry and are excited to share our diamonds with you. Thank you for considering Meraya Lab-Grown Diamond for all of your diamond needs.
The CVD process (chemical vapor deposition) is a method used to grow synthetic diamond crystals in a laboratory setting. It involves the use of a gas mixture that contains one or more carbon-containing gases, such as methane or acetylene, which are introduced into a reaction chamber. The chamber is equipped with a substrate, which is typically a seed crystal or a substrate coated with a layer of diamond nucleation material, and a heating element, which is used to raise the temperature of the substrate to the point where the carbon-containing gases decompose and deposit onto the substrate in the form of a diamond.
To grow a diamond using the CVD process, the following steps are typically followed:
The reaction chamber is evacuated to create a high-vacuum environment.
The substrate is placed in the chamber and heated to the desired temperature, typically in the range of 600 to 1000 degrees Celsius.
The carbon-containing gases are introduced into the chamber and allowed to react with the hot substrate, forming a thin layer of diamond on the surface of the substrate.
The thickness of the diamond layer is controlled by adjusting the flow rate of the gases and the duration of the deposition process.
Once the desired thickness of the diamond has been grown, the gases are shut off and the chamber is allowed to cool down. The substrate is then removed from the chamber and the diamond layer is separated from the substrate using mechanical or chemical methods.
Microwave plasma chemical vapor deposition (MPCVD): This process involves the use of microwaves to excite and dissociate a gas mixture containing one or more carbon-containing gases, such as methane or acetylene, to form a plasma. The plasma is then used to deposit a thin layer of diamond onto a substrate. MPCVD is similar to CVD, but the use of microwaves allows for the growth of diamonds at lower temperatures and faster growth rates.
Laser-assisted chemical vapor deposition (LCVD): This process involves the use of a laser to excite and dissociate a gas mixture containing one or more carbon-containing gases, such as methane or acetylene, to form a plasma. The plasma is then used to deposit a thin layer of diamond onto a substrate. LCVD is similar to CVD, but the use of a laser allows for the growth of diamonds at lower temperatures and faster growth rates.
Plasma enhanced chemical vapor deposition (PECVD): This process involves the use of a plasma to excite and dissociate a gas mixture containing one or more carbon-containing gases, such as methane or acetylene, to form a plasma. The plasma is then used to deposit a thin layer of diamond onto a substrate. PECVD is similar to CVD, but the use of a plasma allows for the growth of diamonds at lower temperatures and faster growth rates.
To grow synthetic diamonds using either the CVD process, trained technicians are required to operate the specialized equipment and monitor the growth process to ensure that the conditions are optimal for diamond growth. This typically involves carefully controlling the temperature, pressure, and gas flow rates in the reaction chamber or press, as well as monitoring the growth of the diamond using techniques such as Raman spectroscopy or transmission electron microscopy.
DO THESE CVD PROCESS CREATE BETTER-QUALITY DIAMONDS?
One advantage of CVD-grown diamonds is that they can be grown over large areas, CVD-grown diamonds are also typically very pure and have a high degree of structural perfection, which makes them attractive for use in applications where high-quality diamond is required.
Yes, HPHT, or high-pressure high-temperature, is a process that is used to create lab-grown diamonds. In this process, a small diamond seed is placed in a pressure vessel along with a carbon-rich material. The pressure vessel is then subjected to high pressure and high temperature, replicating the conditions that occur naturally in the earth's mantle, where diamonds form.
It's important to note that it is not possible to determine if a diamond is lab-grown or natural just by looking at it with the naked eye. Lab-grown diamonds are chemically and physically identical to natural diamonds, so they can only be distinguished through specialized testing methods. Our Diamonds are Certified and Sustainability Rated by SCS Global and Also by IGI, GIA and GCAL. You can check the Diamond Report to confirm whether your diamonds is CVD or HPHT.