---
title: "Diamonds Are Forever: Falling Gem Prices Push China's Lab-Grown Makers Into AI Chip Cooling"
description: China makes half the world's lab-grown diamonds. As gem prices fall, Henan producers are moving into AI chip cooling and semiconductors.
author: Dr Marina Nani (Editor-in-Chief)
date: 2026-10-27T15:44:19.799Z
updated: 2026-10-27T15:47:06.435Z
canonical: https://richwoman.co/article/lab-grown-diamonds-ai-chip-cooling-china
image: https://cdn.nanimediahouse.com/unsplash-gukgk1gigdq.webp
categories: Tech, Innovation
content_type: Analysis
region: China
publication: Rich Dad Magazine
access: members
schema_type: Article
about:
  - type: Person
    name: Feng Canjun
    description: Chinese entrepreneur who founded the Jiaruifu lab-grown diamond factory in Zhengzhou, Henan province, in 2019. He plans to move most of his output from jewellery into functional materials for chips, servers and industry by 2030.
    jobTitle: Founder, Jiaruifu
    worksFor: Jiaruifu
  - type: Organization
    name: Jiaruifu
    description: Lab-grown diamond factory in Zhengzhou, Henan province, China, founded by Feng Canjun in 2019. It runs 550 high-pressure, high-temperature presses and produced about 2 million carats in 2025.
    foundingDate: 2019-01-01T00:00:00.000Z
    industry: Lab-grown diamonds
---

Diamonds are forever, or so De Beers told the world in 1947, when it coined the line that turned a mined crystal into the standard promise of marriage. Seventy-nine years later, a diamond maker in central China is planning for a future in which most of his stones never touch a finger.

Feng Canjun runs the Jiaruifu factory in Zhengzhou, the capital of Henan province. His 550 presses, each weighing more than 100 tonnes and costing about 3 million yuan, squeeze carbon at the heat and pressure found deep underground. One machine grows 120 carats of rough diamond in six days, a job the earth takes billions of years to finish. Feng started the business in 2019 and has increased output tenfold since then, to 2 million carats in 2025. Reuters puts that at roughly 9 per cent of what De Beers produced last year.

![A hand holding a small brilliant-cut diamond between finger and thumb against a light background.](https://cdn.nanimediahouse.com/pexels-13648409.webp)
*Photo: Photo: <a rel="nofollow" href="https://www.pexels.com/@jimbear">Jimmy Chan</a> / Pexels*

---

*This article is only available to registered readers. Visit the article URL to read the full piece.*