algorithmic modeling for Rhino



This group is obsolete, do not expect support here. Moved to the Peacock's server on Discord:


Generative Jewelry
 is a new discipline in 3d jewelry design which lets you create parametric jewelry, automate production, optimize costs, do much more with much less and create new shapes only possible with the algorithmic modeling and scripting. These tools allow you to create quickly and easily jewelry with Grasshopper :)

Current version: 0.99.1

Support Email:


Members: 139
Latest Activity: Jan 23, 2022

Group organization


If you need help using a component, or you need advice on how to do something about jewelry in Grasshopper, you can post a discussion in this group. Tutorials are coming.


These components may contain small bugs, are usually easy to detect the cause and fix them. Please, if you find any, notify me with the ghfile to
If you need the fixed component, I can send it if you ask me. Otherwise, the correction will be added in the next release.


If you think would be useful to change something of a component, you can notify me via email or post a discussion, for example title "Component prongs should have fewer inputs". Consider whether you need to open a discussion or better send me an email.

New components.

If you have an idea for a new component, you can post a discussion in this group. It may be just a wish or be accompanied by a proposed definition. If you do not want to publish the content of the definition, have a private discussion with me via email.

To propose new components, we should follow rules. At the beginning of the title of the discussion, you should put "NCP -" (New Component Peacock)


If you want to participate in the development of Peacock, must share with me via email three new useful components. I reserve the option to choose collaborator. These components will be owned and have their name while 50% of the original script is not modified.
Being developer supposed to know the password of all components. Personally, I would rather share the components as open, but I need to custody my work for now.

Discussion Forum

Custom Oval Stone Size In Gem Studio

Hello,Can anyone help me with getting a custom size for an oval shapped stone. Im using the GemStudio button and when I enter two numbers for the size, I just get two stones.  I need my stone to be…Continue

Tags: gem, oval, gemstudio, peacock

Started by Jean-Mattis Bourgault Jun 29, 2021.

Pave component dependencies 1 Reply

The "Pave Random" component mentions that it requires Kangaroo to run in the menu tooltip; both Rhino6 and Rhino7 come with Kangaroo pre-installed. When I drag the component to the canvas, I get an…Continue

Started by Joshua Edelstein. Last reply by Joshua Edelstein Dec 23, 2020.

Using gem cutter 1 Reply

Hello, I cannot seem to be able to use the gem cutter tool properly. Ive tried to use it but nothing happens. Can someone explain to me how it works or give me some tips on how to use it?ThanksContinue

Started by Jean-Mattis Bourgault. Last reply by Wonseok Chung Oct 7, 2020.

Peacock with Rhino 5 Mac 4 Replies

Hi!Who have Peacock working on Rhino 5 for Mac?I have install it but most nodes are not working. For example Gem Studio doesn't generate gems and many-many other doesn't work.I have OSX Mojave.Continue

Tags: Rhonoceros 5 Mac, Mac, OSX

Started by Sergey Radovsky. Last reply by Sergey Radovsky May 4, 2020.

Comment Wall


You need to be a member of Peacock to add comments!

Comment by Jean-Mattis Bourgault on June 29, 2021 at 3:53pm


Can anyone help me with getting a custom size for an oval shapped stone. Im using the GemStudio button and when I enter two numbers for the size, I just get two stones.  I need my stone to be 5.1mm x 4.2mm. The standard size I am getting when I enter 5.1 as the number is 5.1mm x 3.17mm (or something close to that). Which is nowhere near what I need.

Any help will be greatly appreciated

Comment by Medusa on May 17, 2020 at 7:51pm

Hi Daniel! I'm wondering how to set up the "Prong" parameter.

I understand it is for prong position, but have no idea what are those numbers meaning.

The original is 


and when I connected it that all prongs crunched to 1 side.

If I want to make evenly 4 prongs, what parameter should I use? 

Thank you!

Comment by Samuel Arredondo on June 21, 2019 at 4:16am

Hello Daniel,

thank you for your answer, also another question: is there a way to define the width for the baguettes when using the gems by curve tool?

I'm supporting you on patreon, are there any tutorials for peacock?

Comment by Daniel González Abalde on January 14, 2019 at 12:25pm

Hi Samuel,

what you see is the result of the intersection of the geometry display by the Metal Preview and the Rhino viewer, you should hide one of them.

Comment by Samuel Arredondo on January 14, 2019 at 3:15am

Hello Daniel, 

I'm enjoying peacock a lot, still learning how certains components work.

I have a strange effect on my geometry when I want apply the metal preview, what am I doing wrong?

Thank you

Comment by jalinkao on August 28, 2017 at 2:20am

hi, Daniel

ribbon-surface.3dmI am a fine jewellery designer, and I tried to use this plug in for paving stone, each stone doesnt have distance or only under 0.1mm,

to surface edge there should be at least 0.3mm distance,  

I want to ask the function for pave on surface, 

is not possible to pave on surface on the surfaces like this?

I tried to use function with pave between 2 crvs using iso lines to do this , but it's still hard to fit my require that I have to pave them manually.

do you have alternative solution for this as well?
thank you

Comment by Daniel González Abalde on May 6, 2016 at 6:17am

Hi xlxdesign,

you need the latest version of gh (0.9.0076). The latest version has changed the Clean Tree component.
If persist, ssend me an image of error notification to


Comment by xlxdesign on May 5, 2016 at 9:04pm

About the Component Variable Offset,everytime I use it,a pop-up window comes out saying" clean tree is unrecognized".And the result is the component can't works.

Hope for your reply, Thanks a lot!

Comment by Sandra Bornemann on January 24, 2016 at 7:50am
Hi Daniel
Thank you ever so much for your speedy reply! Very helpful :-)
Comment by Daniel González Abalde on January 24, 2016 at 7:50am

Please add a discussion for consultations.

Hi Sandra,

as you can read on Size_param description or in the component description, the current release uses European Gauge (in all rings components). This is Radius = (size+40)/(2*Pi), where "size" is the value to give, it's usually used in countries like Spain, Italy, Netherlands, Switzerland... The next release will have 6 ways (5 regional system + diameter) to give it the size in different regional systems with just two clicks, in fact, the rings of the next release are already developed, but will have to wait...

Knowing that:

ISO (International Organization for Standardization). mm of internal circunference. Austria, France, Germany, Belgium, Scandinavia...

radii = Size / (2 * Math.PI) 

European Size. Spain, Italy, Netherlands, Switzerland...
radii = (Size + 40) / (2 * Math.PI) 

British Size. United Kingdom, Ireland, Australia, New Zealand, South Africa...
radii = ((Size * 0.4) + 11.5) / 2

American Size. United States, Canada, Mexico...
radii = ((Size * 0.83) + 11.54) / 2 

Japanese Size. Japan, China, India, South America...
radii = ((Size / 3) + 12.67) / 2

Diameter Size. Many goldsmiths anywhere.

radii = Size / 2


and since this release are UserObject componentes, you can remplace if you want the Size component with one new. For example, right clicking size_param, going to Expresion and setting x*pi-40, the size input will be the diameter of the resulting circle, if you give it a value of 14, the circle will have a radius of 7. Then save the userobject (File>Create User Object) and remove the other.

Or create a new one, since this component is just a rotated circle and a cylinder.

Hope this helps.


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