Is the Crystals 3D model free for commercial use?

Yes. It is free under the 1DesignTool 3D library license: use it in personal and commercial work — games, apps, websites, renders, ads and client projects — and modify it as you like, with no credit required. What you can't do is re-sell or re-distribute the file on its own or inside a model pack.

What file format is it, and how big is it?

A single binary glTF 2.0 file (.glb), 67 KB: 752 triangles, 2,256 vertices and 15 materials, modelled in metres at 2.3 m × 1.6 m × 2.0 m.

Can I animate Crystals?

It ships as a static mesh. Its 6 named parts are separate nodes, so you can move or animate each one in your engine.

Which engines and tools can open it?

Anything that reads glTF 2.0. three.js, React Three Fiber, Babylon.js, Godot 4 and Blender import the GLB directly; Unity and Unreal Engine load it through their glTF importers. The snippets above show the exact code for three.js, React Three Fiber, Godot and Blender.

How was the Crystals 3D model made?

Claude Code (Claude Opus 5.5) generated it inside 1DesignTool's 3D template from a written brief, then the design kit's checks verified the geometry and the GLB before it was published. You can make your own the same way with 1DesignTool.

FREEcommercial use · no sign-up

Crystals

A low-poly cluster of hexagonal cyan crystals growing out of a faceted cave boulder. A tall main point is ringed by smaller points leaning outward, with broken shards, pebbles and moss around the foot.

Original GLB67 KB Poster

Left rail: colours and the 4 knobs the agent wrote into this model — they rebuild the geometry and go into your download. Right rail: looks for the viewer. Drag to orbit, scroll to zoom.

Triangles: 752
Vertices: 2,256
Meshes · materials: 15 · 15
Size (W × H × D): 2.3 m × 1.6 m × 2.0 m
File: GLB · 67 KB
Animation: Static
Style: Low-poly
Collection: Cave System

Palette · named materials

crystal cyan — crystal bodies#20c6df
crystal cyan light — crystal tips#67d4e4
crystal cyan dark — crystal bodies (toward crystalColour 0)#168a9c
stone grey — boulder shoulder and crown, pebbles#757e8a
stone grey dark — boulder foot, pebbles#525860
mid grey — boulder upper band, accent facets, pebbles#7d828c
stone grey light — boulder accent facets#a3a5a8
soot black — boulder underside#1b1b22
moss — pads on the boulder#55743e

Use it

import { GLTFLoader } from "three/addons/loaders/GLTFLoader.js";

const gltf = await new GLTFLoader().loadAsync(
  "https://assets.stoicsoft.com/1designtool/3d/models/cave-system-crystals/3bef7e7d11/model.glb"
);
scene.add(gltf.scene); // metres, +Y up, front faces +Z

How it was made

The brief given to 1DesignTool's “3D object” template:

Crystals for the Cave System kit. Design it as one clear asset at believable real-world scale for that setting (state the size in metres in meta.notes), with its main parts modelled and named, readable at thumbnail size and from every orbit angle. This is one part of the Cave System kit (Low-poly style, flat-lowpoly direction): Tunnels, crystals and underground water. Use ONLY the kit palette, by name: stone grey #757e8a, crystal cyan #20c6df, moss #55743e, torch amber #ec9c13, stone grey dark #525860, crystal cyan dark #168a9c, stone grey light #a3a5a8, crystal cyan light #67d4e4, soot black #1b1b22, warm white #f2ede2, mid grey #7d828c, dark wood #3d2a1c. Every material's `name` must be exactly the palette colour it uses — the GLB carries these names so the kit recolours as one; an unnamed material fails delivery. Kit knob: expose a param `crystalColour` (0–1, default 0.5) for the kit's "Crystal colour" setting wherever it makes sense on this part, and keep that id.

Agent: Claude Code · Claude Opus 5.5 in 1DesignTool
Direction: Low-poly · family products
three-check PASS · glb-lint PASS

Make your own with 1DesignTool →

Named parts · 6

Crystals
Rock base
Main crystal
Side crystals
Loose shards
Moss and pebbles

Note: Size: the cluster is 1.62 m tall (tip of the main crystal). The boulder is about 1.6 × 1.3 m and 0.45 m high, and the loose shards bring the footprint to about 2.3 × 2.0 m. The origin is the bottom centre and the model rests on y = 0. Every crystal is rooted in the boulder or lies on the floor. The GLB has 752 triangles in 15 meshes (merged per part and colour), flat normals (non-indexed) and no animation clip. Every material is named exactly after its kit palette colour. The exporter writes one material per mesh, so the same colour name can appear on several materials: recolour by name. At the default crystalColour, crystal cyan dark is not used. Params are baked into the GLB at their defaults and only change the geometry when the scene is rebuilt in the viewer. crystalColour (the kit's 'Crystal colour') moves each crystal along the dark → mid → light cyan ramp, and it only swaps between palette colours. The pale ground disc in the preview is viewer staging only and is not in the GLB. The viewer exposure is 0.5 so the cyan and grey stay saturated. This does not affect the GLB. glb-lint reported 0 errors and 5 heuristic warnings, all expected. The material-count and duplicate-material warnings come from the per-mesh materials. The unindexed warning comes from the flat-shaded geometry. The sibling-overlap warning comes from the boulder's colour bands sharing one bounding box. The detached warning is the moss pads, which sit on the boulder but are in a separate part from it. plan-check passes except for its part-id regex, which rejects the hyphens in the slug-based ids this library requires. It was verified PASS on a de-hyphenated copy, and three-check accepts the ids. Fix round 1: lowered exposure from 0.62 to 0.5 (the crystals looked washed out), stopped tilting the moss pads (one stood upright like a sliver), darkened the boulder crown, thickened the main point and pulled the shards in closer to the boulder.

About the Crystals 3D model

Crystals is a free low-poly 3D model from the Cave System set. It measures 2.3 m × 1.6 m × 2.0 m (W × H × D) at real-world scale and is built from 752 triangles across 15 meshes, with 6 named parts. Download the 67 KB GLB and drop it into three.js, React Three Fiber, Godot or Blender — free for commercial use, no attribution required.

Is the Crystals 3D model free for commercial use?: Yes. It is free under the 1DesignTool 3D library license: use it in personal and commercial work — games, apps, websites, renders, ads and client projects — and modify it as you like, with no credit required. What you can't do is re-sell or re-distribute the file on its own or inside a model pack.
What file format is it, and how big is it?: A single binary glTF 2.0 file (.glb), 67 KB: 752 triangles, 2,256 vertices and 15 materials, modelled in metres at 2.3 m × 1.6 m × 2.0 m.
Can I animate Crystals?: It ships as a static mesh. Its 6 named parts are separate nodes, so you can move or animate each one in your engine.
Which engines and tools can open it?: Anything that reads glTF 2.0. three.js, React Three Fiber, Babylon.js, Godot 4 and Blender import the GLB directly; Unity and Unreal Engine load it through their glTF importers. The snippets above show the exact code for three.js, React Three Fiber, Godot and Blender.
How was the Crystals 3D model made?: Claude Code (Claude Opus 5.5) generated it inside 1DesignTool's 3D template from a written brief, then the design kit's checks verified the geometry and the GLB before it was published. You can make your own the same way with 1DesignTool.