Glowstone Dust

Dropped by

• Witch
• Possessed Blaze (Occultism)
• Shiny Witch (Shiny!)
• Wraith (The Twilight Forest)

Dropped when you break

• Glowstone
• Array Glowstone
• Bismuth Glowstone
• Braid Glowstone
• Circular Glowstone
• Cracked Glowstone
• Cracked Glowstone Bricks
• Dent Glowstone
• Encased Brick Glowstone
• Firefly Squish
• French Glowstone
• Glowstone Panel

And 22 more.

Found in chests

• Extra (YUNG)
• Foundry Chains (When Dungeons Arise)
• Foundry Normal (When Dungeons Arise)
• Foundry Passage Normal (When Dungeons Arise)
• Hall (YUNG)
• Jungle Tree House Treasure (When Dungeons Arise)
• Lighthouse Top (When Dungeons Arise)
• Mechanical Nest Equipment (When Dungeons Arise)
• Mechanical Nest Normal (When Dungeons Arise)
• Mega Fortress Brewing Scraps (MoogsNetherStructures)
• Mega Fortress Ravaged (MoogsNetherStructures)
• Mining Complex Dripstone Normal (When Dungeons Arise)

And 14 more.