TORONTO -- Canadian actor Jason Priestley has posted a heartfelt tribute to his late "Beverly Hills, 90210" co-star Luke Perry on social media.

In an Instagram post, the Vancouver-born star shared a photo of them together from their days on the 1990s teen drama series.

In Priestley's caption, he said Perry was like a brother to him and that he "adored his family, was passionate about his work, and loved his wide collection of friends."

Priestley added that every life Perry touched, he made better, noting "he was caring, gentle, charming, warm, funny, and smart."

He also said Perry loved to tell stories and laugh and was "a true gentleman."

Perry, whose other credits included "Buffy the Vampire Slayer" and "Riverdale," died Monday after suffering a massive stroke at age 52.

He and Priestley played high-school pals in a wealthy neighbourhood in "Beverly Hills, 90210."

"Luke was much more than just a friend to me... he was also my teammate, my teacher, my sounding board, my compass, my brother," said Priestley's Instagram post.

"Luke was truly one of a kind."