Royal Gel
A blob of slime with a tiny crown in its center. With the right headpiece you can reign over all slimes.
Overview
Royal Gel is an item whose set bonus causes most slimes to become peaceful toward the player. While the bonus is active, the player cannot harm slimes, making it a niche utility effect rather than a combat boost.
The effect is based on its behavior in Terraria. Before version 0.7.0.0-2cab, the set bonus also affected members of factions allied with slimes, including 
Official description
A blob of slime with a tiny crown in its center. With the right headpiece you can reign over all slimes.
Other entities of this type
- A fine filament that has microscopic pieces of ancient gemstones woven into it. Its existence is proof of the absolute mastery over materials by whoever created it.
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- Amalgam Basin
- Amalgam Vent
- Amber Chunk
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- Amber Larva
- Ammonite
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