Jewellery & Diamond Financial Crime Expert Witness

The rise in financial crimes involving jewellery, gold, and diamonds demands expert intervention. At Jewellery Advisory Services (JAS), we provide impartial and accurate valuations, acting as expert witnesses in legal proceedings related to fraud, money laundering, asset recovery, and other financial crimes.

The Problem of Jewellery-Related Financial Crime

Financial criminals are increasingly exploiting the high value and portability of precious items. From intricate jewellery to raw gold and valuable diamonds, these assets are being used to facilitate illicit activities.

Cases such as the recent West Yorkshire Police investigation, where a scrap jewellery business was used to launder £266 million (West Yorkshire Police, 2025), demonstrate the scale of the problem.

Types of financial crime we frequently encounter include:

  • Fraudulent valuations and misrepresentation of diamonds and gemstones.

  • Money laundering through the purchase and sale of high-value jewellery.

  • Asset concealment and recovery disputes.

  • Forensic analysis for insurance claims and legal proceedings.

  • The use of uncut gemstones and raw precious metals, in laundering schemes.

Why Choose Jewellery Advisory Services?

  • With years of experience in the jewellery industry, we are experts in detecting fraud and providing accurate assessments.

  • We offer independent and unbiased valuations and advice, ensuring a fair and honest evaluation of your jewellery, diamond, or gemstone investments.

  • We have a proven track record of providing expert witness services in legal proceedings.

  • We maintain the highest standards of confidentiality and professionalism when handling your case, offering discreet and empathetic support.

If you require expert witness services for a financial crime investigation involving jewellery, gold, or diamonds, please contact us for a confidential consultation.


Mehdi Saadian

Head of Expert Witness Services

Mehdi Saadian, Managing Director

Email Mehdi

Mobile: +44 (0) 7 311 667 667