# How can I create an irregular quartz shape - Rhino 5

**URL:** <https://discourse.mcneel.com/t/how-can-i-create-an-irregular-quartz-shape-rhino-5/118855>\
**Category:** Rhino for Mac\
**Tags:** mac\
**Created:** [February 19, 2021, 11:22am UTC](https://discourse.mcneel.com/t/how-can-i-create-an-irregular-quartz-shape-rhino-5/118855 "2021-02-19T11:22:55Z")\
**Posts on this page:** 1\
**Showing post:** 2

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**Author:** ![laurent\_delrieu](https://sea3.discourse-cdn.com/mcneel/user_avatar/discourse.mcneel.com/laurent_delrieu/32/601605_2.png) [@laurent\_delrieu](https://discourse.mcneel.com/u/laurent_delrieu)\
**Post date:** [February 19, 2021, 11:47am UTC](https://discourse.mcneel.com/t/how-can-i-create-an-irregular-quartz-shape-rhino-5/118855/2 "2021-02-19T11:47:37Z")

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In grasshopper there is a component to generate one crystal. David Rutten has done a script to make crystals

> [@Crystal Maker Test Gems with .IOR in Thea Render](https://discourse.mcneel.com/t/crystal-maker-test-gems-with-ior-in-thea-render/35553):
>
> Hey, I did a test in Thea Render with @DavidRutten 's “Crystal Maker” Grasshopper tool: I used a tiny 0.01 Edge Softening for some subtle edge-highlights and all the materials are lab-measured gems using .ior files for diamond (most of the gems in the background), ruby, sapphire, amethyst, aquamarine, emerald, tourmaline and titanium dioxide (lower right). (Some of the colours are quite subtle in this size of just a few millimetres…) The only light is from a HDRI, so the caustics are not as …

also

> [@Beginner - Help Making a Geode Pattern](https://discourse.mcneel.com/t/beginner-help-making-a-geode-pattern/118737/6):
>
> [crystal growth on surface v2 with organic mesh.gh](https://discourse.mcneel.com/uploads/short-url/udAWuXkOnn2cpNu3hfR5FNt2w8s.gh) (100.3 KB) You wanted to make too much things? Just plug the output mesh to that! Choose the side, and play with sliders, if too slow double click on the slider to put the value Bigger

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