£3.5M
The funding round was led by Foresight Group alongside existing investors Parkwalk Advisors and Oxford Science Enterprise.
Opsydia produces sub-surface gemstone laser inscription technology for diamond identification.
Opsydia is an Oxford University spin-out that develops laser technology to place microscopic, permanent identifiers beneath the surface of diamonds and other gemstones.

Martin Booth
Martin is Chair of Optical and Photonic Engineering at the University of Oxford and founded Opsydia. He also serves as a Professorial Fellow at St Hugh's College.
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Patrick Salter
The funding round was led by Foresight Group alongside existing investors Parkwalk Advisors and Oxford Science Enterprise.