This is a 55mm CHONK SENIOR. 
This Exclusive Chonky has a liquid core eyeball that spins when rolled!

A relic of the primeval wilds, Forest's Gaze is a lush, emerald-green 55mm d20 that conceals a watchful eye in its heartwood glow. With rich golden numbers and swirling, forest-like patterns, it evokes druidic rites, awakened groves, and primal guardians. Ideal for nature-themed campaigns or anyone who wants their dice to feel alive.

Each order is for only a single 55mm d20.
A  great addition for intermediate-level dice collectors!
DiceMice's polyhedral dice sets are compatible with Dungeons & Dragons, Pathfinder, Call of Cthulhu and many other tabletop RPGs.