Glowing Obsidian

Glowing obsidian was an unobtainable decorative block that emitted light.

Obtaining
Glowing obsidian dropped itself only when mined with a diamond pickaxe or netherite pickaxe; otherwise, it dropped nothing.

Usage
Glowing Obsidian could be used for decoration, though add-ons or inventory editors were the only ways to obtain it.

Light
Glowing obsidian emitted a light level of 12.

Issues
Glowing obsidian is an unsupported block, and as such, issues relating to them may not be fixed.

Trivia

 * Glowing obsidian makes an appearance in Minecraft: Story Mode - Season Two, spawning around the observer when Jesse places the structure block and on the bottom of the obsidian cages Vos was in.
 * Glowing obsidian has no name assigned to it, so its in-game name appears as.
 * Despite this, it can be assigned a custom name using a resource pack with a language file.