Beacon beams can go through solid blocks
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However, this issue has been closed as a Working as Intended
From the wiki:
Beacons require an unobstructed view of the sky, though bedrock and transparent blocks (including water, lava, slime, glass, enchanting table, and other beacon blocks) will not count as obstruction.
Reporter: William Kang
Assignee: (Unassigned)
Created: 2017-01-31T21:12:33Z
Updated: 2025-04-16T22:24:23Z
Resolved: 2017-01-31T23:03:08Z
ADO:
Confirmation Status: Unconfirmed
Platform: Tablet - iOS - iPad Air 2
OS Version: iOS 10.3.1
Labels:
Affects Versions: 1.0.2
Fix Versions:
Retrieved 2025-06-10T03:12:53Z
"Thank you for your report!"
However, this issue has been closed as a Working as Intended
From the wiki: