A confidential, professional valuation service is provided by Katherine Brunacci, for and on behalf of Minar Jewellers.

Katherine has extensive gemological and jewellery experience, holding both GIA (Gemological Institute of America) and GAA (Gemmological Association of Australia) Gemmologist qualifications. She is also a registered jewellery valuer in Australia (National Council of Jewellery Valuers, AUS).

She completed a Masters in Fine art (Majoring in Gold and Silversmithing) in 2009 and has been a practising jeweller since. In 2017 she relocated to London to further pursue her jewellery manufacturing and valuing career. In 2018 she gained her second Registered Valuers qualification with the IRV (Institute of Registered Valuers).  Her love of Gemstones and jewellery has taken her on research trips to Italy, Hong Kong and Tucson.


A professional valuation document includes:

  • A full description of your items. The items personally examined by the valuer.
  • A complete and accurate record of your precious items.
  • Clearly identifies the items.
  • Provides precise descriptions which include factual data, assessment and digital images.
  • Gives a justifiable value conclusion.


Valuations are carried out on :-

  •  Jewellery, including antique, foreign, modern, and high net-worth pieces.
  •  Asian jewellery.
  •  Polished diamonds and all other gemstones.
  •  Watches.
  •  Silverware and flatware.
  •  Mayoral regalia.

Arrangements can be made for laboratory certification of gemstones, diamonds and pearls. Grading and assessment by such laboratories can influence and be most helpful when assigning a value to items and is often important in identifying whether a gemstone, diamond or pearl is natural or has been subjected to certain enhancement/treatments, or indeed synthetic.


Valuations are carried out for :-

Insurance – Wear and enjoy your valuable gems, jewellery and watches, use your silver and display your trophies, knowing you have obtained the right, detailed valuation. The valuation for Insurance provides a factual identification and expert assessment of the value for your items so that you may arrange the appropriate cover for insurance.

Inheritance Tax Assessment - (in Scotland confirmation of Will) - the values calculated represent an assessment based on mid-auction estimates as at date of death. The valuation document provided will comply with Section 160 of IHTA 1984.  


Post Loss Assessments

The Post-Loss Assessment is not classified as a valuation.

If you have a burglary or unfortunate loss of loss of your jewellery or watches, we have the knowledge and expertise to provide a Post-Loss Assessment estimate for replacement. The Post-Loss Assessment is based upon information given by yourself and any previous documentation or digital images, this assessment you can then present to your insurers.    


Have you had a loss of jewellery or personal jewellery items stolen and are unsure of the current prices? Our in depth post loss valuation service will be able to assist you. Please book an appointment by calling +44 208 767 7627 or emailing