Appraisals

The valuation of stones and jewels establishes the market value and requires in-depth expertise, gemological equipment and extensive specific experience.


In our laboratory, we personally effectuate gemological analysis and all kinds of appraisals, from hereditary divisions to appraisals in national and foreign vaults.


Each analysis or appraisal is performed before the client and only upon prior telephonic reservation.

The instrumentation

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jewellery appraisals

The goldsmith's skills and the equipment we have available allow us to disassemble and reassemble the stones directly in the lab and during the day.


Here is a detailed list of tools available within the LGR Gemmologico Laboratory in Bergamo:

  • Spectroscope
  • Thermal tester
  • Moissanite tester model 590
  • Precision balance (0.001ct)
  • Electronic gauge
  • Polariscope
  • Electronic GEMCHROM EOS Colorimeter
  • Diamond series / cz master
  • UV lamps (365-254nm, 200-12w)
  • Stereo-microscope with dark field
  • Digital stereo-microscope featuring a scope with video camera
  • Stereo-microscope with reflected light polariser
  • 10x aplanatical lens - achromatic
  • HPHT diamond treatment metre
  • Electronic proportiometer

Roberto Spagnolo and Fabio Spagnolo are the gemologists who analyse, scuple and certify both in the laboratory and in national and foreign vaults.

Roberto Spagnolo

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Analysis laboratory

An honorary graduate in gemological science from Miami Int.University
Gemologist diploma from the I.G.I.(Italian Gemological Institute)
Expert in diamonds for the Gemmological Institute of America
Borsa Diamanti d’Italia advisor
Assessor for the C.C.I.A. of Bergamo
Appraisals for the Court of Bergamo
Appraisals for the Collegio Lombardo

Member of the World Federation Diamond Bourses

Fabio Spagnolo

fabio spagnolo

Gemologist diploma from the I.G.I.(International Gemmological Institute) in Antwerp
Assessor for the C.C.I.A. of Bergamo
Borsa diamanti d’Italia member
Appraisals for the Court of Bergamo

Member of the World Federation Diamond Bourses

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