Opsydia can now apply the smallest ever logo or characters below the surface of a diamond. They have a diameter of just a micron (0.001 mm) and are visible only at 100x. The technology works on even the highest clarity gem with virtually no impact on its grade. It applies a nano-scale logo, serial number or encrypted code that links to a diamond's grading report, blockchain record or branded jewelry origins.
Useful link: https://opsydia.com
