Gem & Crystal Generator

Generate stylized or realistic gems and crystals right in the Unity Editor. Pick a shape and a color, adjust, and export a ready-to-use mesh, material and prefab.

Key features

• Editor window with a live, rotating preview and an in-scene preview
• 8 cuts: Round, Oval, Cushion, Princess, Emerald, Pear, Marquise, Cabochon
• 5 crystals: Quartz (double point, single point, natural), Bipyramid, Rhombohedron
• 11 color presets based on real gemstones, plus user-saved color presets
• Gem shader with inner reflection, per-facet sparkle, background refraction and scene lighting support
• 3 looks (Stylized / Balanced / Realistic) and 2 quality levels (High / Low)
• Two-color gradients, rainbow fire, milkiness and HDR glow for Bloom
• Exports a mesh, textures, a MatCap texture, a material and a prefab per gem
• The exported MatCap can also be used in other MatCap shaders
• Edit generated materials later in the Inspector
• Option to use the URP Lit shader instead
• English and Japanese interface
• 3 demo scenes and a PDF manual

Requirements

• Unity 6.0 or later
• Universal Render Pipeline (URP) only
• The generator runs in the Editor. Generated assets work in builds.

Gem & Crystal Generator is an Editor tool for creating gems and crystals for your URP project. Choose from 8 cuts and 5 crystal shapes, pick one of 11 color presets based on real gemstones, and fine-tune the result while watching a live preview. One click exports a mesh, textures, a material and a prefab that you can drop into any scene.

The included Gem shader makes stones shine with facet reflections inside the gem and per-facet sparkle. Switch the look between Stylized, Balanced and Realistic, and choose High or Low quality to balance appearance and performance. By default, gems follow the scene lighting, so they get darker in dark places; this can be turned off.

Everything is customizable: proportions, facet count, crystal distortion, two-color gradients, rainbow fire, milkiness and HDR glow for Bloom. Save your own colors as presets and reuse them across the project. Generated materials can be edited later in the Inspector.

Suitable for fantasy and RPG games, treasure and loot, item shops, crafting systems, puzzle games and decorative crystals in environments. No coding is required.