But what’s their ‘Unique Selling Point’, you ask? How does being in with a chance of winning an authentic diamond sound?

As if indulging in a 5 star luxury Brunch on the 40th floor of this famous London landmark wasn't enough, Brunchers can enjoy a glass of Dom Perignon Champagne that will have a sparkling stone at the bottom of the glass - but only one will be a true, full-cut diamond worth £1000.

undefinedAvailable from 11am - 3pm on selected Sundays throughout December, guests will finish their Champagne before taking the stone to an on-site diamond inspector - who will take a look and reveal the lucky Bruncher that has the real jewel.

Served in the elegant Iris Bar, guests who do not receive the actual diamond need not fear as a four course menu including caviar, Champagne and views across the London skyline is surely still enough to satisfy those craving luxury. 

undefinedThe Brunch menu includes pastries & artisan bread as starters, a second-course featuring options such as a meat board or homemade ricotta heritage tomatoes and - because one is never enough - another main course featuring dishes such as salmon cake fennel, baked butterbeans or bavette steak. For your final course, you can select desserts with the likes of a cheese board, chocolate ganache tart and freshly made waffles with seasonal fruit.

Tickets come in at £120 for an all-day extravaganza, and the winner of the real diamond shall be announced at the end of the event. As we all know  - diamonds are a Bruncher's best friend - so, what are you waiting for?

Get your tickets here!