Back to Ganoksin | FAQ | Contact

Rendering a diamond in Rhino / Flamingo


#1

I am having difficulties rendering diamonds and gems in
rhino/flamingo. Please share your tips, tricks and any advice that
might help. The renderings I have seen online are crisp and look like
brilliant diamonds. Mine look fair at best.

I am trying to render items on a plain white background. I have
tried changing the ROI between 1.54 and 2.417, I have tried changing
the lighting and adding colored lighting, also increasing the
reflection and transparency numbers. Maybe I have not come upon the
ideal settings - if there are any. Does anyone have some ideal
settings that they would like to share? I have spent so many hours
playing with these settings and am having no luck – figured it was
time to turn to my ganoksin community.

Are there any places where I can download sample diamond materials?

Might it have anything to do with the camera angle - light? Any
suggestions how to move these and where to?

I have been playing with diamonds from http://www.3dlapidary.com/
a very cool free place to download mesh diamonds! (I have no relation
to them - just a happy downloader)

Thank you for your help,

  • walter

…in the garage down by the beach.


#2

Check out http://giraffe.e-cnc.com this Rhino plug in has a
complete listing of gemstones that work including diamond.


#3

Here’s a tip for you. If you’re using the diamond pattern from
3D-Lapidary, you’ll want to re-create the diamond with NURBS using
the endpoints of the meshes, deleting the meshes as you work through
them. The process only takes a few minutes.

Once you have the diamond in a NURBS format, group or join the crown
and pavilion into two separate objects. Assign about 90% transparency
to the top using the RI for diamond. Make the bottom opaque and 100%
mirror, no color.

For the render to look right, you will need to use a large white
plane above the diamond to give the lighting something to work with.
A spherical background helps a lot as well. I like to use Jeff’s
Sunroom which I flattened first with HDRI-Shop. Any background will
work, but one that is not too colorful may be best. Play with you
lighting a bit and you’ll find what is optimal. I like to put a light
almost directly over the diamond, and a couple more at different
angles, one near the camera, and one in the far corner.

Once rendered, I recommend using PhotoShop or something similar to
enhance the image, bring up the contrast and taking out any unusual
coloration from the background. You’ll find the background also helps
the gold to render more realistically.

Frequent the Rhino NG too, great help there.

Any questions, feel free to email me directly if you like…

Jeffrey Everett


#4

Walter If you are using Flamingo, take a look at the example shown in
the manual and the sample file “Diamond Ring” supplied with the
software, usually found in the following directory structure:
"Program Files\rhino\Plug-ins\Flamingo\Tutorial Files\Diamond Ring"
Review the on decals in section 23 & section 7 of the
manual, also take a close look at the diamond in the sample file.
Explore the properties (decal) of the lower portion (pavilion) of
the diamond, (“edit placement” and “properties”) I too fooled around
for a while with refractive indices, reflection, etc., but it is the
decal that makes all the world of difference

Richard Dubiel
DUBIEL DESIGN STUDIO
@Dubiel_Design_Studio
Tel 905.566.0950
Fax 905.290.9398


#5
 I am having difficulties rendering diamonds and gems in =
rhino/flamingo. 

Walter,

If you contact me offline and I’ll email you all the settings and
decals to make stone renderings look realistic. I’ve created a large
number of NURBS stone types and shapes by “faceting” them in Rhino
and giving them properties in Flamingo; I’m very willing to share
both my settings and my decals with anybody who would like them. =

If you’d prefer there is a pluggin for Rhino called Giraffe which
includes stones, stone seat cutters, calculators for weight and
numerics, and more available at:

http://www.jbdstudio.com/giraffe

The cost of the pluggin is about $400.00; I’m not associated with it
except for having taken a workshop with its creator earlier this
month.

If you use my settings for object properties and the decals I will
supply (and I’ll tell you how to apply the decals to the object and
what propeties to give them) your stones will look as good or better
than those supplied in the pluggin. Lighting will improve or detract
from the overall appearance of the stone in the rendering, but
decaling the stone is the most important factor to get your stones to
look less like cut glass and a lot more realistic.

I’m sending you a rendering of a diamond offline so you can judge if
it is something you might like.

Paul D. Reilly
The Paul Reilly Company
Phone: 719-598-9307
Email: @Paul_D_Reilly1


#6

Jeffrey, you posted this back in May, 2004. I saved it in my
’photography’ file.

Do you have any ‘tips’ or can you refer me to any about
using Photoshop for enhancing the look of diamond jewelry? Info.
could be either online or in a book.

I have taken Charles Lewton-Brain’s photography course, read lots of
books, and finally can take decent photos of jewelry.

BUT, the diamonds in my jewelry photos look DREADFUL! They have
absolutely no ‘snap,’ show NO brilliance or fire.

They look like they’re not worth a nickle, although, in many cases
they’re worth thousands of dollars. I would appreciate any help that
you have time to give.

p.s.I am not doing CAD/CAM nor computer rendering, only old-fashioned
photography (albeit with a digital camera.)

— Jeffrey Everett wrote:

    Here's a tip for you. If you're using the diamond pattern from
3D-Lapidary <snip> 

Play with you lighting a bit and you’ll find what is optimal.

Once rendered, I recommend using PhotoShop or something similar to
enhance the image, bring up the contrast and taking out any unusual
coloration from the background. You’ll find the background also helps
the gold to render more realistically.

    Any questions, feel free to email me directly if you like... 

Thank you,

David Barzilay
Lord of the Rings
607 S Hill St Ste 850
Los Angeles, CA 90014-1718
213-488-9157


#7

contact Brian at: info@jbdstudio.com he has done what you’re trying
to do, maybe he’ll help or if not you can purchase his stone
rendering and scaling Rhino plug-in. There are a lot of other extra
things in his plug-in

Good luck