Create, Buy and Sell

Create, Buy and Sell

If you have any Questions about
an eBay Item, Click Below to email me


My name is Louis Benowitz G.G. the founder of LB Jewelry Design. Starting with your simple sketch or detailed technical drawing we will create the 3D file used for printing a high resolution rapid prototype printer (wax model printer).  I focus on high end CAD jewelry products but can also complete your medical part designs or high end toys.

cad jewelry design

1920’s cad ring design

We can also oversee the complete production process of casting the master model, pre-finishing, mold making, quantity casing, finishing, gemstone supply and finished product delivery.  Since I am semi retired am only accepting high quality custom jobs or quantity orders.  I have traveled the world and have fantastic contacts for gemstones and diamonds at great prices.  Diamond, Sapphire, Alexandrite and Spinel from Sri Lanka, Ruby and Tourmaline from Madagascar and Thailand. Tanzanite, Tsavorite and Chromium Tourmaline come from Arusha and Mombasa. Of course diamonds are available from dealers in California, New York, Israel and India


Finished cad jewelry design

cad jewelry design render

Need CAD jewelry designs? We take your logo, ideas, drawings or pictures and create finished fine custom jewelry designs to your specs.  We use Rhinoceros CAD software which is the best nurbs modeling program on the market.  Click here to learn about Rhino Combine that powerful software with Matrix and we can make any design a 3-D reality.  After completion we email renderings for your approval before one dollar is wasted on fabrication.  If changes are requested they will be made to the CAD file, renderings are emailed back to you for approval.  In this way we can save the time and money wasted by using the traditional custom jewelry process.



There are several methods available.  The easiest is via email.  Simply email your jewelry design idea, logo and measurements to us ( click here to email ).  If you are unsure, no problem.  Please send me an email including your sketch or picture and description.  When it arrives I can offer suggestions if needed until we will agree on the details.  When the CAD jewelry work is finished renderings will be sent for your approval.

After the CAD jewelry image is approved arrange to “grow” the wax jewelry model on a hi rapid prototyping machine.  Unlike other processes like milling machines today’s model machines are able to grow models that have undercuts, thin wires, beads and even hollow areas.  All this is done with for the best casting results.  You can have the final wax shipped to you for final inspection if needed. Or feel free to take our STL file and use your own rapid prototyping machine or job out the models to the service bureau of your choice.

Once complete, the CAD jewelry wax model is then ready for the casting process.  We suggest using a casting company with precise digitally controlled electric burnout ovens.  However, no special burnout cycle is needed if using a wax model, most hi-res wax models provide porosity free, crisp and clean castings.  If you choose to print the file using a resin model a special burnout may be required.  A standard magnetic barrel tumbler will pre-finish your casting.  If your jewelry design calls for multiple pieces, the design will have tabs and slots so the goldsmith can precisely assemble and prepare the complete piece for the setter.  The jewelry is now ready for the finisher.

halo bypass diamond engagement ring

halo diamond engagement ring

award winning engagement ring

Wave diamond engagement ring

Jewelry Model Design


The prices will vary according to the complexity thus the time needed for your design.  A common engagement ring may take 10 minutes, a complex ring may take numerous hours.  Just send an email for a no obligation estimate.

CAD design services ………………. $ 75 per hour

CAD consultation …………………… $ 90 per hour

Setting and finishing fee based on complexity and quantity.

Minimums apply, Volume and Trade discounts apply.

Please ( click here to email ) or call 213-629-1823 for prices.

Many people are now increasing sales by being able to bring jewelry designs to the market faster, reducing gemstone breakage with more accurate castings, make rapid design changes and reduce in-house development costs.

cad jewelry design

Are you ready to begin!

Simply click here to email me

Or call us at 213-629-1823 ( I am semi retired so emails are best)

I will make sure you will be completely satisfied with your 3-D file or custom designed jewelry.

Louis Benowitz G.G

Gemwin, Inc.
550 S. Hill St., Suite 1305
Los Angeles, CA 90013
(appointment required)