What are Minecraft Ender Pearls in Real Life?

Ender Pearl, fantasy item, right? Well, maybe not, is there evidence that Minecraft Ender Pearl is a real life material? What are Ender Pearls in Real Life?

I Made a Realistic Ender Pearl : r/Realistic_Minecraft

ArtStation - Minecraft Ender Pearl

AUCTION] 7 DCs of ENDER PEARLS

Ender pearl Pin for Sale by AlenaIsHere

No.48 Enderpearl by Lighiting-Dragon on DeviantArt

AUCTION] 7 DCs of ENDER PEARLS

MC - Pearls by In-Tays-Head on DeviantArt

Ender Pearls, Annoying Villagers Wiki

Fabric] Enderporter - Minecraft Mods - CurseForge

Steam Workshop::Minecraft 3D - Ender Pearl

Enchanted Ender Pearl - Hypixel SkyBlock Wiki

Ender Pearl, Wiki

ender pearl Minecraft Skins

I took a closer look on the ender pearl : r/Minecraft

How many ender pearls are there for an end portal? - Quora