Diamond Foundry joined the Unicorn Club on April 27, 2021. Headquartered in San Francisco, California, United States, the company specializes in creating diamonds using sustainable and eco-friendly methods. Its innovative approach leverages advanced diamond wafer technology, providing an alternative to traditional mined diamonds while reducing environmental impact. Diamond Foundry combines science and artistry to produce high-quality, ethically sourced diamonds for jewelry and industrial applications.
Keep reading to learn how Diamond Foundry built a billion-dollar platform transforming the diamond industry with sustainable technology.
What Is Diamond Foundry and What Does It Do?
Founded in 2012, Diamond Foundry produces lab-grown diamonds using proprietary technology that mimics the natural formation of diamonds. Its products are used in jewelry, industrial tools, and other applications. By focusing on sustainability, the company reduces carbon footprint and eliminates the ethical concerns associated with traditional diamond mining. Diamond Foundry’s solutions combine science, precision, and scalability to meet growing demand for eco-friendly diamonds.
How Much Funding Has Diamond Foundry Raised?
- Series D Round
- Amount Raised: $200 million
- Date: March 15, 2021
- Purpose: Scale production capacity, advance diamond wafer technology, and expand global market reach.
Total Funding Raised: $315 million
Latest Funding Date: March 15, 2021
Latest Known Valuation: $1.8 billion
Employee Count: 501–1,000 (as of Jul 15, 2025)
Key Investors
- Fidelity Investments
- Details: Global investment management firm supporting growth-stage technology companies.
- Focus Areas: Sustainable technology, advanced materials, and innovative consumer products.
- Future Shape
- Details: Venture firm focused on funding companies addressing global sustainability challenges.
- Focus Areas: Clean technology, eco-friendly innovations, and materials science.
Where Is Diamond Foundry’s Headquarters?
Diamond Foundry is headquartered in San Francisco, California, United States, where it develops its sustainable diamond production technology and manages its operations for jewelry and industrial markets.
What’s Next for Diamond Foundry?
Diamond Foundry aims to expand its production capabilities, advance its diamond wafer technology, and grow its presence in global jewelry and industrial markets. The company continues to innovate in sustainable diamond manufacturing, providing ethically sourced alternatives to traditional mined diamonds.
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