LB JEWELRY DESIGN, CAD jewelry design


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My name is Louis Benowitz G.G., I execute CAD jewelry designs and am the founder of LB Jewelry Design and have been in the jewelry business since 1980.  In September of 1983 I graduated from the Gemological Institute of America then located in Santa Monica, CA… #1.  I studied CAD jewelry design in 2004 and have personally completed over 10,000 models.  Starting with your simple sketch or detailed technical drawing we will create the 3D file used for printing the file with a high resolution rapid prototype printer (wax model printer).  I now focus on high end CAD jewelry design.

We will also oversee the complete process of casting the master model, pre-finishing, mold making, quantity casing, finishing, gemstone supply and finished product delivery.  Since I am semi retired 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.  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.


CAD jewelry design

CAD jewelry design



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 before revision 1 renderings are emailed back to you.  In this way we can save the time and money wasted by using the traditional custom jewelry process.


custom cad jewelry design

high end custom diamond jewelry design



There are several methods available.  The easiest is via email.  Simply email your jewelry design idea, logo and measurements ( click here to email ) to us.  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 work is finished renderings will be sent for your approval.  Whether your job is your own unique design or a modification of an existing design you will be pleased.

After the image is approved arrange to “grow” the wax jewelry model on a hi resolution solid wax modeling machine.  Unlike other processes like milling machines today’s machines are able to grow models that have undercuts, thin wires, beads and even hollow areas.  All this is done with the industries best detail and in solid wax 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 file and use your own rapid prototyping machine or job out the models to the service bureau of your choice.

Once complete the jewelry wax model is then ready for the casting process.  We suggest using a casting company with precise digitally controlled electric burnout ovens.  No special burnout cycle is needed if using a wax model, many hi-res waxes provide porosity free, crisp and clean castings.  If you choose to print the file using a resin model a special burnout may be required.  Using a 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 piece for the setter.  The jewelry is now ready for the finisher, probably the most important person in the shop.  Since I am semi retired I will only oversea production on a job by job basis.  Please email me to inquire.


tahitian pearl pendant

Unique jewelry designs

Jewelry Model Design


The prices will vary according to the complexity and size of your design.  Below is a good guideline.

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

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

Casting Flask Fee…………………….$ Fee based on quantity, size and complexity

Metal charge…………………………..$ based on current market price, color and karat

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.

custom ruby and diamond ring

fine ruby and diamond engagement ring

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)