A former equerry to the Queen mother is to give a talk about the royal's jewellery at Oakham Museum next month.

Jeremy Mainwaring-Burton will give the talk in aid of St John Ambulance (Leicestershire & Rutland) on Tuesday October 12 from 7pm.

St John Ambulance says Jeremy served as the Queen Mother's equerry while in the army in the late 1970s.

"Being interested in stones and having a degree in geology he couldn't help but notice the magnificent gems in the jewellery Her Majesty used to wear.

"Indeed, if he admired a certain piece, she would often take it off and give it to him to have a closer look. This inspired him to study gemmology and after leaving the army he qualified as a Fellow of the Gemmological Association.

"He then spent many years as a jewellery and precious stone dealer in London's Hatton Garden.

"Although the Queen Mother may have thought her choice of jewellery "not very great" she actually had so much to choose from that it would be almost impossible to describe it all.

"So, in this entertaining, fully illustrated talk Jeremy concentrates on pieces which have a story attached and are of gemmological and historic interest."

Booking is with St John Ambulance directly (the Museum cannot take your payment for this event).

Tickets cost £25 each, including a glass of wine. Payment should be by cheque made payable to St John Ambulance – using the donation form you can download here.