EuQlid develops the Qu-MRI platform and Quantum Diamond Microscope to map buried electrical currents non-invasively in 3D. Semiconductor manufacturers use these tools for identifying connectivity defects in advanced packaging, backside power delivery, and 3D architectures, while battery developers visualize spatial and temporal current heterogeneities to assess degradation, lifetime, safety, and performance. The technology leverages quantum defects in diamonds for magnetometry, combined with signal processing and machine learning to enable analysis of functioning devices. Founded in 2022 and headquartered in College Park, MD, EuQlid is led by CEO Sanjive Agarwala. The company raised $3 million in a seed round in November 2025, with participation from QDNL Participations, Quantonation, and Audacia.