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CVD Diamond

Over the past half of the century, scientists have discovered a number of ways to do the impossible - to make diamonds. Of the various techniques, only two are viable for producing high-quality gemstones - High Pressure High Temperature (HPHT) and Chemical Vapor Deposition (CVD). However, only the latter, CVD, is also suitable for producing semiconductor-grade diamond material with scalability to inch-scale substrates. It is for this reason that we at J2 Materials are solely focused on CVD processes for producing our diamonds.


Are CVD Diamonds Real Diamonds?

Diamonds made by the CVD process are chemically identical to diamonds that are dug out of the ground. They are as hard, as durable, and, most importantly, as beautiful. Like their mined counterpart, each CVD diamond is unique - no two are the same. And because CVD uses a modern, cleaner approach to obtaining diamonds, we can have that same beauty without having to scar our planet. Gone are the kilometer-wide strip mines and ocean floor scraping. In place are clean facilities that provide jobs free from unsafe conditions. 

So how good are J2 Materials' diamonds? Well, using the same labs that analyze mined diamonds, J2 Materials' diamonds are certified to be colorless. They are also certified to extremely high clarity. Our gemstones are available in sizes from 1ct to 7ct in a range of shapes, all with triple-excellent cuts and symmetries.

Clean. Safe. Unique. Modern Rarity.

How Does CVD Work?

During the Chemical Vapor Deposition process, methane (natural gas) and hydrogen are introduced into a sealed chamber at a controlled pressure. The gases are then excited into an ionized state called plasma. Inside the plasma, the gases become very reactive. The hydrogen ions interact with the methane ions, splitting off carbon atoms. The carbon atoms then accumulate on a substrate, or a seed, forming solid carbon. Through strict control of the process, the accumulation of carbon can be engineered to only produce single-crystal diamond.

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J2 Materials' proprietary CVD process uses very little methane, thereby greatly reducing the process's carbon footprint. Moreover, our hydrogen is produced on-site and on-demand by splitting tap water, resulting in a clean, efficient process that is also extremely safe. We at J2 Materials are passionate about making amazing science, but we are also dedicated to protecting our planet and our community.

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