Gaitkit Open the lab
Gem Pickup, A big faceted game gem balanced on its point, 0.5 m tall by default (pickup scale, not a real stone): brilliant cut, upright crystal, octahedron or emerald step cut, in any colour, with an optional orbiting halo and sparkles. The part named gem spins about y (userData.tick turns it, Loop clip baked) and glows in its own colour at night.
Prop · 1 moving part

Gem Pickup

A big faceted game gem balanced on its point, 0.5 m tall by default (pickup scale, not a real stone): brilliant cut, upright crystal, octahedron or emerald step cut, in any colour, with an optional orbiting halo and sparkles. The part named gem spins about y (userData.tick turns it, Loop clip baked) and glows in its own colour at night.

Size
0.70 × 0.54 × 0.69 m
Triangles
284
Open in the lab Ready for any engine. The download carries the knobs you set here.

Tune it

4 knobs: Cut, Colour, Size, Halo.

Specs

Size
0.70 × 0.54 × 0.69 m
width × height × depth
Triangles
284
of 6,000
Draw calls
1
one vertex-colour material
Loop clip
8 m
of travel per cycle
Moving parts
1
gem · spin
Knobs
4
3 presets
Night lights
1
gem

Passed the validator: real scale, rests on y = 0, front faces +Z, deterministic.

Use it

Code for the specimen as it is set up above; it follows your knobs.

JavaScript
import { createAsset } from 'https://gaitkit.com/cdn/gem-pickup.mjs';

const gemPickup = createAsset();
scene.add(gemPickup);                      // rests on y = 0, front faces +Z

More in the docs; agents can fetch all of this through MCP.

Knobs

KnobTypeValuesDefaultWhat it does
cutchoicebrilliant crystal octahedron emeraldbrilliantbrilliant (round diamond: flat table, sloped crown, deep pointed pavilion), crystal (tall hexagonal shard pointed at both ends), octahedron (double pyramid), emerald (rectangular step cut with clipped corners).
colorcolorany colour#2fd6a0Gem colour. #2fd6a0 emerald green, #ff3b6b ruby, #3f7bff sapphire, #b35cff amethyst, #ffd23f topaz, #bff3ff diamond.
sizerange0.2 to 1.2, step 0.050.5Height of the gem in metres. 0.5 suits a 1.8 m character; 1.2 is a level-end super gem.
halotoggleon / offtrueA thin bright ring around the waist and three little four-point sparkles, so the pickup reads from far away.

Presets: ruby {"color":"#ff3b6b","cut":"brilliant"} · power crystal {"color":"#b35cff","cut":"crystal","size":0.9} · diamond bonus {"color":"#bff3ff","cut":"octahedron","size":0.7,"halo":false}

Files

FileWhat
gem-pickup.glbGLB, default look · 36 KB
gem-pickup.mjsES module, every knob live
gem-pickup.objOBJ, static, no colour
gem-pickup-params.jsonknob schema, presets, night zones

Licence

Use it in games, apps, renders and client work, commercially and without credit. Do not resell it as an asset or train a 3D generator on it. The full licence.

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