Diamond Foundry
PrivateLast Round
Grant
Dec 16, 2024
Est. Valuation
$1.8B
Total Funding Raised
$385M
Momentum
Top 25%
of companies Caplight tracks
Company Overview
Diamond Foundry is a manufacturing company that produces lab-grown, single-crystal diamonds for the jewelry and semiconductor industries using proprietary plasma reactor technology.
Sector
Consumer & Commerce
Verticals
Advanced Materials, Semiconductors, D2C Brands, Sustainable Materials, Clean Manufacturing
Business Model
B2B
Customer Profile
Hardware Sales
AI Layer
Non-AI
Keywords
Price History
Caplight MarketPrice™ estimate for Diamond Foundry, published with a 90-day delay.
Caplight MarketPrice™
$45.72
per share, as of May 2026
-73.9%
2-year change
Caplight MarketPrice™ is an estimate of private secondary market pricing, shown here on a delayed basis for illustrative purposes only. It may be incomplete, is subject to change, and may not be relied upon for any purpose or considered investment advice.
Diamond Foundry Comparables
Compare Diamond Foundry with similar companies based on industry and business-model similarity.
| Company | Similarity | Market Cap |
|---|---|---|
| Adamas One Corp. | 77% | |
| Anglo American | 72% | |
| Appsilon Enterprise B.V. | 72% |
Diamond Foundry Funding Rounds
Historical fundraising activity
| Round | Date | Amount Raised | Valuation | Investors | Sources |
|---|---|---|---|---|---|
| Grant | Dec 16, 2024 | ||||
| Series C | Mar 29, 2021 | ||||
| Series A | Nov 12, 2015 |
Secondary Market Activity
Bids, offers, and trades by month
| Operation | Date | Price | Size | Share Class | Structure |
|---|---|---|---|---|---|
OFFER |
Key People
Founding team and executive leadership
Diamond Foundry Investors
Notable investors and investment history
| Investor | Rounds |
|---|---|
| Capricorn Investment Group | Series C |
| European Commission | Grant |
| Government of Spain | Grant |
| Fidelity Management & Research Company | Series C |
| Obvious Ventures | Series A |
| GVA Capital | Series C |
| Vast Ventures | Series C |
Market signals
Structured signals derived from secondary market and firmographic data.
- Jun 20, 2026
Monthly visitors increased 68% MoM.
- Jan 1, 2026
€1 billion investment in diamond wafer production facility in Spain.
Diamond Foundry Filings
Explore SEC and related filing metadata, where available.
| Type | Date | Amount Offered | Amount Sold | Filing | Pages | Download |
|---|
Filing documents are not displayed on this public page. Request access to learn about available coverage.
Request accessFrequently Asked Questions
Common questions about Diamond Foundry's valuation, stock price, and market status.
Is Diamond Foundry a public or private company?
Diamond Foundry is a private company.
What is the current stock price of Diamond Foundry?
Diamond Foundry is a private company with no public stock price. Caplight tracks Diamond Foundry's secondary market activity and provides MarketPrice™ estimates to Caplight users.
How much is Diamond Foundry worth (valuation)?
Diamond Foundry's valuation is estimated at $1.8B based on funding round data.
Can I buy Diamond Foundry stock?
Diamond Foundry shares may be available on secondary markets subject to transfer restrictions. Caplight facilitates secondary market transactions for accredited investors. Visit https://www.caplight.com to learn more.
When was Diamond Foundry's last funding round?
Diamond Foundry's most recent funding round was Grant on March 29, 2021.
Who are the main investors in Diamond Foundry?
Key investors in Diamond Foundry include Fidelity Management & Research Company.
Will Diamond Foundry IPO soon?
No public IPO plans have been announced for Diamond Foundry.
How can I track Diamond Foundry secondary market activity?
Caplight tracks bids, offers, and trades for private companies. Visit https://www.caplight.com to monitor Diamond Foundry's secondary market activity and sign up for updates.