Carbonado, more commonly known as ‘black diamond’ is becoming a more and more popular choice in the jewellery world. Whilst offering a stark contrast in colour and shine to the more traditional white diamond, they are a unique and eye-catching addition to any piece of jewellery.

Perfect Diamond Trilogy Ring

Here at Polished Diamonds US, technology has allowed us to create your engagement ring to perfection using our Computer Aided Design software, also referred to as CAD. This process is in replacement of hand drafting and sketches, meaning the design process is precise down to 0.01mm or the thickness of human hair.

Having the ability to draft our rings with such accuracy means we can create you a perfect visual representation of your custom designed ring modeled to your finger size and diamond measurements.  Never before have jewellers been able to create any ring design with such precision and accuracy the result is a flawless diamond engagement ring - wow.

           CAD Trilogy Ring Design:                                 Finished Trilogy Ring:

PDN241 marquisepear3stn GERALD RENDER1    actual finish ring

Followingthe digital design process, we 3D print the unique ring into a wax polymer model to take the digital design to physical form.  This revolutionary process avoids any potential human errors and ensuring exact symmetry and replication. Once we have a perfect wax model we then cast this with any of our high quality metals, including platinum, rose gold, yellow gold and white gold. Once the metal has been cast we have the perfect replication of our digital CAD design in the precious metal.  Our bench jewellers have over 50 years experience in hand polishing and hand setting the diamonds or gemstones.  There is no substitute for traditional hand craftsmanship in the clean up, polishing and setting stages.  This process means we have the tools to make any design, with such precision that Polished Diamonds has a strong focus on creating the most perfect ring possible for each of our valued customers.  We boast to be able to produce the most accurate and perfect diamond engagement ring and using this process we deliver time after time.  Each unique jewellery item is backed with a lifetime guarantee so the quality in the build is never compromised resulting in your complete satisfaction.  The amazing point of CAD design is clients do not have to come into our design studio as the digital images can be emailed around the world for clients to confirm or make small adjustments.  When setting GIA certified diamonds with laser inscriptions for security clients can trust the gemstone is correct.

Some CAD Design Examples:

 CAD1   CAD2

By producing specialised rings with this design and 3D printing process provides us with a point of difference from other jewellers who sell stock items, this also means we are so confident in the quality of our products we offer a lifetime guarantee, so you can feel just as confident. All of our diamonds come with GIA certification, to instill that confidence, so you know you are getting a product of superior quality. Although our process is in such detail, our talented designers work hard to have your unique ring created in just 10-15 days. We guarantee to create you whatever design you desire while working within your budget. Using the CAD design system you can find any inspiration from images online like Pinterest and Google images which we can then draw up in a proportional sketch in our architectural CAD software.  For the perfect diamond engagement ring or precious jewellery item contact Polished Diamonds - we'd love to help. 

Here are some more CAD Design Examples: 

CAD13   CAD16

To view more of our previous CAD designs, click here.

We would love to help you create your perfect engagement ring, so do get in touch: either visit our design studio at 30 New Regent Street, CBD for a chat or send us and e-mail at This email address is being protected from spambots. You need JavaScript enabled to view it. 

Coloured diamonds

Despite the fact diamonds exist in over 300 different colours, white is by far the most common and preferred. Diamonds can be found in nature in any colour form with varying shades and hues, with it also being the hardest naturally occurring material.

Here at Polished Diamonds we custom design and make both engagement and wedding rings. Each ring we create is personalised to best suit the customer’s needs.

Emerald engagement ring

Perhaps a diamond ring isn't for everyone, here at Polished Diamonds we want to help you create a unique ring that is perfectly suited for you. The Emerald gemstone is one of the four most recognized gemstones along with ruby, sapphire and diamonds. 

celebrity rings

Wanting some inspiration for your engagement rings? Check out some of these celebrity rings, they're incredible!

Rose gold is one the gold rings available and is less common than white and yellow.

Diamonds are the hardest natural substance on Earth yet the oil from the touch of a human finger can cause dirt to collect and make this nearly indestructible gemstone quickly lose its sparkling appeal. Here are some tips on how to keep your diamond ring sparkling.

As we custom design all our jewellery you can have a really unique ring and get it exactly how you imagined it.

Polished Diamonds manufacture every custom made diamond ring to suit each unique client so any design is possible. We have access to the Worlds best diamond stock so any diamond can be used in your chosen design. So how does it all work?

Here at Polished Diamonds we can offer you every ring style imaginable, from the traditional solitaire to the bolder halo, we have the perfect engagement ring for her lifestyle and your budget.

As Jewellers of Distinction, Polished Diamonds can create any ring design to suit your dreams, budgets and expectations.  So how does it all work and where do I start?

There are a wide range of precious metals available for you to construct a diamond ring. The most popular metals are the ones that are very white or yellow in colour.