Pixor library — Crystal shrine set (7 assets), CC0.

A shrine of glowing crystals: an obelisk, a rune stone, an orb on its pedestal and a magic circle.

scene/set-crystals.glb is the whole scene as one model; each asset is its own zip, with its
README, model, Blender file and sprites.

Found at https://pixor.art/library/sets/crystals/ (free, CC0).
The sprites were rendered with Pixor: 3D to animated pixel art. https://pixor.art/
