Black Diamonds poster
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Black Diamonds

7.019401h MovieDramaCrime

A reporter on a visit to his hometown hears of dangerous conditions at the local coal mine, and proceeds to investigate.

DirectorChristy Cabanne
WritersSam Robins·Clarence Upson Young

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Black Diamonds was released on July 16, 1940 but we couldn't find it on any streaming service yet. Rights can change — try again later.

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Cast · Directed by Christy Cabanne

RARichard Arlen
Richard Arlen
Walter Norton
ADAndy Devine
Andy Devine
Tolliver Higgenbotham
KAKathryn Adams
Kathryn Adams
Linda Connor
PFPaul Fix
Paul Fix
Matthews
MTMary Treen
Mary Treen
Nina Norton
CCCliff Clark
Cliff Clark
Archie Connor
PFPat Flaherty
Pat Flaherty
Johnson
MA
Maude Allen
Mom Norton
JMJames C. Morton
James C. Morton
Joseph Aloysius Stacey (as James Norton)
TCTom Chatterton
Tom Chatterton
Dr. Lukas
HR
Henry Roquemore
David Phillips, editor
CBClaire Du Brey
Claire Du Brey
Henderson's Secretary

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Black Diamonds — streaming FAQ

Which OTT platform streams Black Diamonds?

Black Diamonds isn't streaming anywhere in United Kingdom yet.

Is Black Diamonds on Netflix?

No, Black Diamonds is not on Netflix in United Kingdom as of September 2026.

Is Black Diamonds on Amazon Prime Video?

No, Black Diamonds isn't on Amazon Prime Video in United Kingdom right now.

Where can I watch Black Diamonds for free?

Black Diamonds isn't streaming in United Kingdom yet, so there's no way to watch it free at the moment.

What is the OTT release date for Black Diamonds?

Black Diamonds hasn't started streaming in United Kingdom yet. Based on the typical 6–8 week theatrical-to-streaming window, we estimate it will arrive around September 3, 1940. This is a prediction, not a confirmed date.