Laser engraving on metal cannot be considered as a gemological service, but is part of the optional activities that the Center of Analysis Masterstone reckons as useful for Customers. The opportunity to engrave a jewel with the number of gemological analysis is a surplus value and becomes important for the awareness of the object itself, for example in case of theft or loss. Law Enforcement often recovery booty and ask for a certain proof before giving it back to legal owner. If the analysis number is engraved on jewel, everything is easier. Furthermore, laser allows a personalization and a finishing touch on precious objects, through the engraving of logos, drawings, dedications for anniversaries and special dates, where attention for detail and quality is very important.