Lab-Grown Diamonds Move Beyond Jewelry—Into Technology
Bench jewelers have known this for years: diamond handles heat. It’s one of the few gemstones you can often leave in place during a repair—retipping a prong or resizing a ring—because it pulls heat away so efficiently. That same property is now being put to work in a very different setting—inside high-performance electronics.
According to information from LGDinTECH, an online platform and industry hub connecting producers and users of technology-grade grown diamond (TGGD), the material is being engineered not as faceted stones, but as flat plates and wafers. These are typically produced using CVD (Chemical Vapor Deposition) for its control over purity and crystal structure, though HPHT-grown material can also be used.
LGDinTECH, co-founded by Liz Chatelain and Marty Hurwitz, is described as a vertical, B2B digital marketplace for technology-grade grown diamond materials, integrated components, and related equipment, tools, and services.
Instead of carats, think in terms of millimeters to centimeters. These diamond plates can be small enough to sit inside a semiconductor package—or large enough (approaching 10 cm across – almost 4 inches) to serve as optical windows in high-power systems. Shapes are practical: squares, rectangles, and rounds designed to integrate directly into devices.
LGDinTECH outlines several key application areas—some already in use today:
- Electronics & Semiconductors
Used in GaN RF amplifiers found in 5G base stations, radar systems, and satellite communications—where excess heat limits performance. Diamond layers help pull heat away from the active region, allowing higher power output and longer device life. - Thermal Management
Applied in power electronics for electric vehicles (EVs) and data center processors, where managing heat directly impacts efficiency, reliability, and device longevity. - Optics & Photonics
Already in use as windows in high-power CO₂ lasers (industrial cutting and welding) and gyrotrons used in advanced energy research, where diamond replaces materials like zinc selenide due to its durability and thermal stability.
One area, however, stands apart—and is already moving into real-world deployment:
In quantum sensing, diamond is used in a very different way—as a highly sensitive magnetic sensor. And now, one has been launched into space. In March 2026, SBQuantum sent a diamond-based quantum magnetometer into orbit as part of the U.S. National Geospatial-Intelligence Agency’s MagQuest Challenge, aimed at improving how Earth’s magnetic field is monitored for navigation. At the core of the device are diamonds engineered with tiny defects—nitrogen-vacancy (NV) centers—within the crystal lattice. When illuminated with green laser light, these centers emit red fluorescence, and that light shifts in response to magnetic fields. By measuring those subtle changes, the diamond itself becomes the sensor—capable of delivering continuous, high-precision data that could support navigation systems independent of GPS.
LGDinTECH positions itself as both a marketplace and an information hub, linking material producers with end users across these sectors. The broader vision points toward a larger role for diamond in advanced technology—but today, its use remains focused on specific, high-performance challenges where other materials fall short.
For the trade, the takeaway is straightforward. The same material that survives a jeweler’s torch is now being engineered for performance—shaped, grown, and integrated into systems where heat, stability, and durability are critical.
Now, will this take off everywhere? That’s still an open question. It comes down to cost and how easily these diamonds can be produced at scale. As for whether they can truly outperform the materials already doing the job… I think we all know the answer to that.
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