Swizz Beatz gifted Alicia Keys a LEGO-themed chain for her 40th birthday.

Swizz Beatz and Alicia Keys

Swizz Beatz and Alicia Keys

The 42-year-old rapper celebrated his wife's milestone birthday last month on January 25 by presenting her with a personal link chain with 65 carats of diamonds and sapphires that was in the style of the toy plastic mini bricks.

He reached out to celebrity jeweller, Elliot Eliantte, who told TMZ the 'Money in the Bank' hitmaker dropped a six-figure sum to treat the 'Girl on Fire' hitmaker as she is a huge fan of LEGO.

It comes after Alicia praised her husband for leaving her "speechless" with his romantic gestures to celebrate her landmark birthday.

In a social media posting, she wrote: "What a weekend!!! I’m so blessed! Beyond words! Thank you to everyone for your sweet wishes, beautiful sentiments and all the love you spread celebrating my BIG bday today!! I’ll never forget it!

"2 things I want to share ... Don’t hold back your joy!! Period! Live and breathe it, in all the small and big ways! Don’t let ANYONE tell you romance is dead... One day I’ll tell you the whole story of this weekend...

"My love.... honestly I’m speechless. You really love me huh?? I ADORE you! Thank you for ALWAYS showing me that I’m the most important thing in the Galaxy to you."