A system for the effective recording and recovery of gemstones uses site machines for recording the optical response of gemstones with these optical responses being forwarded to a central database for classifying in a manner to allow effective searching of the database. The site machine progressively...http://www.google.es/patents/US5124935?utm_source=gb-gplus-sharePatente US5124935 - Gemstone identification, tracking and recovery system
Gemstone identification, tracking and recovery system
