Litigation Support & Business Audits


Noted gemologist, appraiser and author Charles Carmona has extensive experience consulting for attorneys and has testified at deposition and/or in trial for dozens of legal matters in many jurisdictions. He is frequently retained to provide advice in legal proceedings requiring specialized knowledge of industry practices and the valuation of jewelry, diamonds, gemstones, watches, coins and currency, silver and related personal property.

An expert valuation specialist, Mr. Carmona's contributions are key to determining financial damages in complex litigation, criminal matters, insurance claims, class actions and other types of disputes.


Mr. Carmona is a Graduate Gemologist (GG) from Gemological Institute of America (GIA) with over 40 years of experience. He is also an Accredited Senior Appraiser (ASA) from the American Society of Appraisers and his work conforms to the Uniform Standards of Professional Appraisal Practice (USPAP). His highly acclaimed reference book, The Complete Handbook for Gemstone Weight Estimation is relied upon worldwide by jewelry professionals as the authoritative source for estimating mounted gemstone weights by shape, dimensions and specific gravity.

His professional opinions are frequently sought out by the media, and he is often invited to speak at conferences, workshops and trade shows.


Mr. Carmona has earned an exemplary reputation as an impartial expert witness, assisting both plaintiffs and defendants.

As well as the legal profession, he offers consultation and appraisal services for accountants, insurance companies, museums, governmental and non-governmental agencies, including The World Bank, Department of Homeland Security, IRS and Securities & Exchange Commission, among numerous others.


Mr. Carmona thoroughly understands the trial process and how to anticipate a line of questioning during cross examination.

He exhibits acute awareness of nonverbal cues like facial expressions, gestures, posture and eye contact, and how they contribute to juror perception.

He conveys clear, confident and concise testimony that underscores his persuasiveness and effectiveness.


Mr. Carmona delivers critical support to his clients at each stage of a legal dispute, from fact-finding and discovery to settlement or trial. His services include expert witness testimony, reports, critiques of opposing expert opinions, and consultation during discovery and fact-finding.

His expertise covers the following areas:

  • Accounting & Business Inventory Audits
  • Arbitration & Mediation
  • Commercial Damages
  • Complex Civil Litigation
  • Contractual Disputes
  • Criminal Litigation
  • Damage Estimates
  • Equitable Distribution
  • Fair Market Value (Estate Tax, Donations)
  • Family Law
  • Financial Investigations
  • Fraud and Mismanagement
  • Immediate & Orderly Liquidation Value
  • Insurance
  • Intellectual Property Disputes
  • Professional Malpractice

Learn more about Mr. Carmona's experience and credentials by calling 213-624-0137 or email: