Diamonds are grown using two different methods, and there is a lot of misinformation floating around about them. All of them boil down to the question: which one is superior, CVD or HPHT? It is, however, impossible to describe the flood of information coming from these companies and media outlets as anything other than chaotic and contradictory.

Why does the information differ within the industry from different companies?

It should not come as a surprise that information differs from article to article, since most companies are trying to advance a particular agenda. To construct a specific narrative, they will cherry-pick information and write whatever benefits their view. Case in point, just recently, we encountered a global company that confidently proclaimed to their customers that CVD was the superior method for growing diamond and, therefore, it was wise for them to avoid buying HPHT. In contrast, a USA based company is likewise trying to convince their customers that HPHT is the winner and advocating against purchasing CVD diamonds. It is therefore true that both of these companies mislead their respective customers by selectively telling the truth and telling a good deal of lies in order to make money.

In reality, there is no actual difference between the resulting diamonds of both CVD and HPHT methods in terms of colour, clarity, and size, starting from worthless or unmarketable diamonds to stunningly perfect diamonds. However, behind the scenes, each of their suppliers, the labs creating the diamonds are playing a tug of war behind the scenes. They will say whatever they need to say to push the method that yields them the most profit while moving the most stock. For instance, a supplier may give a better deal on CVD diamonds but not on HPHT diamonds, while another supplier might take the opposite stance.

What Is The Difference Between CVD And HPHT ?

When it comes to determining which method is better, CVD or HPHT, the simple truth is that the only difference in both is the method of creation, which is inconsequential to a prospective customer as it has no impact on the quality or price of the diamond. Both methods can produce the full range and quality of genuine diamonds optically, chemically, and physically identical to their earth-grown counterparts. There is no way for you or anyone else to tell an HPHT diamond from a CVD diamond apart.
It would be possible to go into the technical details of each method and magnify their differences; however, we, and many experts in this area, believe that it would be a pointless waste of our time. In its place, we will provide you with practical and easy to follow advice gathered through long experience in this industry.
Each of our lab grown diamonds in Hong Kong is industry certified by leading certifiers; therefore, you should focus solely on getting the most value out of your diamond. Aim for the largest stone within your budget while keeping colour as high as possible. Clarity is secondary, but there is a general rule that you should follow; when it comes to clarity, try to go for SI1 and above to ensure it is eye clean. The exception to the rule is emerald cuts, where we recommend going for VS2 and above. You are guaranteed to make the right choice by following those two simple guidelines. The method used to grow the diamond does not really matter since the result will be exactly the same regardless of whether it was by CVD or HTPT. Diamonds are a lifetime companion, so buying the largest and most eye-clean lab grown diamond that you can afford is the key to a successful purchase.
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Real facts:

• Both HPHT and CVD can produce D colours lab grown diamonds
• HPHT on average yields higher colours than CVD
• CVD on average yields higher clarities than HPHT
• HPHT and CVD can produce VVS1 and FL
• Most lab grown diamonds HK under 1:00ct are HPHT due to costs effectiveness