Worldwide Gemological Services

New York, NY, USA

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Jewelry Appraiser - Cathy Mawart
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WGS - Worldwide Gemological Services is located in New York, NY. WGS provides appraisals and has the particularity to provide appraisals on-site; these appraisals can be created for different purposes: Estate, Donation, Liquidation and Insurance Value. WGS also creates also Gem Identification Reports and Diamond Grading Reports - these documents have no financial value ascribed. WGS's Appraiser is an ISA Member, using GIA nomenclature and provides appraisals according to the criteria laid down by USPAP - "to perform valuation services competently and in a manner that is independent, impartial and objective."

Please use the contact links at the top of this page to contact Cathy regarding WGS services.

En attente de texte


The Business

  • Private Practice & Trade Appraiser
  • Business mix: 100% valuations
  • Principal + 0 staff valuers
  • Mon - Fri: 8.30am to 6pm
  • Mobile lab, via jewelers


  • Per-item & time-based fees
  • All major cards accepted
  • Full appraisal reports start at $150


  • GG
  • ISA


  • GIA Alumni
  • ISA



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While you wait jewelry appraisal


Worldwide Gemological Services
417 East 83 Street
New York
NY 10028

  • Limited Access
  • Chargeable, close-by
  • Visitors by appointment only
  • View large map


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