Blackburn Cathedral will host a talk on 'the world's largest diamond' next week as they host their first 'Champagne and Diamonds' event.

With more than 20 years’ experience in the industry, leading gemmologist Helen Dimmick will be sharing her insights into the life cycle of one of the world’s most famous diamonds, a treasured gemstone that has been 'adorning' the crown jewels for over a century.

The Great Star of Africa, also known as Cullinan Diamond, will be the talk of Blackburn on Wednesday, July 10.

Helen’s talk named ‘from Rough to Royal’ will take you on the diamond's journey through time.

Helen Dimmick said: “I am really looking forward to taking to the stage at Blackburn Cathedral. 

"I have so many so many stories to share on the lifetime of this remarkable stone and how it become part of our Royal family’s personal collection.

"I hope you can join me!”

The Cullinan Diamond is the largest gem-quality rough diamond ever found, weighing 3,106 carats (621.20 g).

It was named after Thomas Cullinan, the owner of the mine. In April 1905, it was put on sale in London, but despite considerable interest, it remained unsold after two years.

Helen is a diamond grader and jewellery historian whose career spans time at the renowned Tiffany & Co. and Green and Benz.

Helen’s talk will be preceded by a reception where champagne supplied by Mann Fine Wine Ltd will be served alongside canapés created by the Cathedral’s very own Checks and Greys.  

More champagne tasting will be on offer with two other varieties.

Tickets for Champagne and Diamonds cost £35 and can be booked online on Eventbrite.

All proceeds from this event will raise money for the Blackburn Cathedral Trust Appeal which supports Choral Scholars, Education with Schools and The Restoration of The Crypt Appeal.

This article originally stated that the diamond will be presented at Blackburn Cathedral. The event is a talk about the diamond without its presence.