Stephen Knowles officially owns the world's biggest collection of Black Sabbath memorabilia - and is "heartbroken" following the death of the band's frontman Ozzy Osbourne

Guitarist Tony Iommi paid tribute to Ozzy's chaotic, fun-loving persona on stage and reflected on their recent farewell concert.

The legendary rock star, Black Sabbath frontman and reality TV personality died on July 22 at 76. About two weeks prior, he played his final concert in his native Birmingham, England.

After news of the Black Sabbath vocalist’s death surfaced, Jessica and Louis Osbourne took to social media to subtly pay their respects to their late dad.

The sports world paid tribute to a heavy metal icon on Tuesday. Ozzy Osbourne, the legendary Prince of Darkness, died at the age of 76 on Tuesday, and kind words quickly poured out for the larger-than-life singer.

Osbourne’s final show came nearly seven years after he stopped touring as health issues continued to pile up. One of those final shows came here in Michigan on Sept. 19, 2018 when he performed at Pine Knob (then known as the DTE Music Theatre) in Clarkston.

BIRMINGHAM, England — Ozzy Osbourne’s fans had sensed the end was near. At his final show just a few weeks ago, admirers watched the heavy metal icon perform while seated on a black throne and knew it would likely be the last time they saw the lead singer of Black Sabbath. He died Tuesday at age 76.

Black Sabbath’s surviving members paid tribute to Ozzy Osbourne after his death at 76 amid his battle with Parkinson’s disease

A helicopter arrived at Ozzy Osbourne’s mansion as medics battled for hours to save the rock icon in his heartbreaking final chapter.