Statistically speaking the Fortune III has a 115% chance of dropping extra diamonds. However after the 1.16.0.57 update the fortune enchantment not longer seems to work. For example, eight diamond ore blocks were mined, only eight diamonds dropped.
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Thank you for your report!
We're actually already tracking this issue in MCPE-67169, so I've resolved and linked this ticket as a duplicate.
If you would like to add a vote and any extra information to the main ticket it would be appreciated.
If you haven't already, you might like to make use of the search feature to see if the issue has already been mentioned.
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Thank you for replying to my report, I was trying to search for this issue but did not realize there was a search feature! Thank you kindlyΒ

Thank you for replying to my report, I was trying to search for this issue but did not realize there was a search feature! Thank you kindlyΒ
Thank you for your report!
We're actually already tracking this issue in MCPE-67169, so I've resolved and linked this ticket as a duplicate.
If you would like to add a vote and any extra information to the main ticket it would be appreciated.
If you haven't already, you might like to make use of the search feature to see if the issue has already been mentioned.
Quick Links:
π Issue Guidelines β π¬ Community Support β π§ Customer Support β π Game Wiki