What is the largest lab-grown diamond in the world？in 2026
As the first article on this site about lab-grown diamonds, it features the world’s largest lab-grown diamond. If you’re interested, please check out the related article.
However, when I searched Google today using the keyword “What is the largest lab-grown diamond in the world?”, the results Google returned were not for the world’s largest lab-grown diamond mentioned in my article.
The results provided by Google are as follows:
As you can see in the image, this information isn’t entirely accurate, so I think I should take this opportunity to clarify things for everyone once again: The Truth About “What Is the Largest Lab-Grown Diamond in the World?”
What is the largest lab-grown diamond in the world？
In October 2025, at the 15th China Henan International Investment and Trade Fair, a 156.47-carat lab-grown rough diamond was quietly displayed, shimmering with a pale yellow glow.
This diamond, cultivated by Henan Power Diamond Co., Ltd., has just been certified by the International Gemological Institute as the world’s largest single-crystal lab-grown diamond.
It broke the previous record of 150.42 carats set by Meylor Global in 2022, marking China’s rise to the forefront of global technology in the cultivation of large-carat diamonds.
So, let me reiterate: what is the world’s largest lab-grown diamond? It is, of course, the 156.47-carat lab-grown diamond produced by Henan Liangliang Company in China.
Why doesn’t Google show any results when I search for “What is the world’s largest lab-grown diamond?”
You might be wondering, why didn’t Google show any results for this diamond when I searched for “What is the largest lab-grown diamond in the world?”
I think this is probably mainly due to information asymmetry. For many years, Chinese people have been accustomed to using search engines like Baidu.
In addition, people abroad still don’t have a sufficient understanding of China. There is still some asymmetry in the exchange of information.
If you speak Chinese, try searching for “the world’s largest lab-grown diamond” on Baidu in China—you’ll find an overwhelming amount of information about this lab-grown diamond.
Below are the results from a Baidu search in Chinese. Please refer to them.
At this point, some people might ask: Has this world’s largest lab-grown diamond been certified?
Don’t worry—I’ll answer your question using search results from Baidu in Chinese. Please see the screenshot below:
To help you understand the Chinese text in this image, I’ll translate it for you first. The search term used on Baidu is “Has the world’s largest lab-grown diamond been certified?”
The red arrow in the search results points to the following information:
Certifying Body: International Gemological Institute (IGI)
Certification Conclusion: The world’s largest known single-crystal lab-grown diamond, breaking the previous world record of 150.42 carats set by Meylor Global in 2022.
So, “What is the largest lab-grown diamond in the world?” The answer is this 156.47-carat lab-grown diamond synthesized by Henan Power Diamond Co., Ltd. in China!
Why am I so bothered by the results of my Google search for “What is the largest lab-grown diamond in the world”?
It’s not that I’m being overly sensitive; it’s just that, based on these results, I feel the world still has a very limited understanding of China.
In particular, the world still lacks a clear understanding of the fact that China has become the world’s largest producer of lab-grown diamonds.
Therefore, I very much hope that the world will recognize that China is currently the world’s largest producer of lab-grown diamonds.
We sincerely hope that people around the world will learn more about China and its lab-grown diamonds, and we hope that in the future you will find a lab-grown diamond ring or other product on our website that you truly love.
Chinese references:
https://baijiahao.baidu.com/s?id=1846920017819897052&wfr=spider&for=pc
