Top Service Rating - 5 Stars - Certified Merchant

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Explore the Difference

Unlike most Internet jewelers, at Diamond Design Co. each piece of jewelry is carefully designed and crafted by our in-house jewelers.

Need it wider, smaller, more stones, less stones, a different metal or precious stone, NOT A PROBLEM. Our jewelry is made-to-order-, "made by us for you".

Fine quality jewelry should come with fine quality service

"Test Drive Your Ring"™

The ultimate jewelry buying experience!

Looking for a Ferrari experience and feeling disappointed? Want to know more about the product before you buy it? You don't need to look any further.  Diamond Design Co. offers the most personal, unique shopping experience that puts you in the driver seat. Your ring, your way! 

Diamond Design Co. is a leading jewelry manufacturer in San Francisco and offers unsurpassed quality in made-to-order jewelry services.   Our “Test Drive Your Ring”™ service allows you to make all the decisions about the creation of your ring. 

When you choose this service you are the driver that will bring your ring to life. Learn more about how our jewelry is made or watch a video on the CAD design process.

How it Works:

  1. Select “Test Drive Your Ring”™ service option, include the item number or detail of the ring you want and description of any desired customizations. Most rings on our site are available for a "test drive." This is especially useful for eternity rings because carat weights can be deceiving as to the actual size of the ring
  2. Using our CAD/CAM system, we’ll design your ring per the selected specifications; size, wax mouldwidth, carat weight, etc.
  3. A wax mould will be cut with our precision milling machine within 1/100th of a millimeter
  4. We’ll send you the wax and sample stone sizes (simulated), within 5 business days, so you can ensure every aspect of the ring is exactly as you want it before we make it. Note that the stones are not set in the ring per se, they are loose so you can see exactly what size the stones will be
  5. You can make design changes and receive a new wax (2 waxes total) right away
  6. Upon your approval your ring will be made to your exact specifications and sent to you in 5-7 business days

How much does it cost?

Our “Test Drive Your Ring”™ service has NO ADDITIONAL COST.  The deposit starts at $150 and is fully credited to the purchase price of your ring.  If you choose not to purchase your ring the deposit is non-refundable and this covers the cost of design, milling and shipping, etc. There is no obligation.

Why is the deposit non-refundable?

Custom design work in the jewelry industry is very expensive and difficult to find. Diamond Design Co. makes this process easy and affordable by giving the customer the ability to "see" before purchasing and to build trust in Diamond Design Co. There is a significant cost associated with CAD design process and time, wax milling, selecting stones, etc. Our fees are non-refundable to cover some of these costs and it also ensures some level of committment from the customer, resulting in mutual benefit and a trusting relationship.


1. You can check the size and width of the ring and ensure it is exactly as you want it and make sure it matches to another ring if needed

loose diamond2. Carat weights can be deceiving, by receiving a sample size of the stones, you'll know exactly what you're getting. (Note: if you want to see the authenitic stones we will use, an additional deposit is required)

3. If the wax is not perfect the first time, you can make changes

4. Made-to-order pricing, no inflated inventory costs or overhead. You get the best price.

No other retailers can offer this level of customer service because most are resellers. We are the manufacturer and “Test Drive Your Ring”™ service is all about you and getting the perfect ring you want, made just for you.

wax, cast, set Watch the video of this ring's CAD Design Process.

When the purchase of a piece of jewelry is important, select fine quality jewelry by Diamond Design Co. Made by us for you.

Questions? Please send an email to or call us toll free at 1.866.488.3326.


Take Our Survey and Save!

"Test Drive Your Ring" is a new program at Diamond Design Co. and we want YOUR OPINION to ensure we have developed a program that meets the needs of our customers.

Read about this new program and then take our survey. To show our appreciation, at the end of the survey you will be given the option to choose a shopping gift with savings valued up to $150.


CAD design for test drive your ring

Test Drive Your Ring

The ultimate in jewelry buying experience. Test drive your ring puts you in the drivers seat. Your ring, your way. Learn More

Jewelry CAD Design System

Advanced Design Technology

Quality you can trust from Diamond Design Co. We make each piece to your exact specifications. See our videos. Learn More