Jewelry Design Center Diamonds

We are the largest independent supplier of natural loose diamonds in the Northwest. Every single diamond at JDC is hand selected for their brilliance and value because industry standards (carat, cut, clarity and color) simply cannot define a stone's performance. 

We reject over 95% of the diamonds we see because we look for stones that are bright and truly catch your eye - not just a certain size or statistics that look good on paper.  That is why you won't find our diamonds listed online. Every diamond is different and perfoms in a way that is unique to that particular stone.

Our natural diamonds are ethically obtained and purchased directly from the source. We work with sources in Africa, Russia, Belgium, Canada and India to individually select every diamond we sell. Some diamonds can even be traced back to the exact location in the ground where they were discovered!

JDC has more diamonds to choose from then any other local jeweler.  Plus you will enjoy the highest quality, best prices (starting as low as $100), and our unbeatable guarantee. Stop by and see for yourself! All pieces in our showroom are made using the highest quality natural diamonds (even the smallest ones!) - lab created diamonds and diamond alternatives are available by request only. 

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When you purchase a natural diamond and engagement ring from us, all maintenance including stone loss (up to $3,499), sizing, polishing, rhodium plating, cleaning (and much more!) are free of charge FOR LIFE. Let us clean and check your Now & Forever ring every 6 months to ensure your piece stays in the best possible shape and catch problems before they start. This is the BEST warranty you will find out there, and it can't be purchased - simply purchase your diamond and setting at JDC!


Our diamond return policy is unheard of in the industry. When you purchase one of our natural diamonds you get a 100% money-back guarantee for 100 days - just to be sure. Forget about buyer's remorse. You won't find a brighter more beautiful diamond for the price. We are that proud of our diamond quality!


Jewelry Design Center offers a lifetime return credit on every natural diamond we sell. You will get 100% of the amount you originally paid on the diamond to use towards anything in the store, including custom work and repairs. No minimum purchase required, no need to double your money. How awesome is that?


The shape of the diamond is often confused with the cut. Though diamonds are cut to create different shapes, and different shapes may lend themselves to either brilliance or clarity, the term “cut” refers to the way light is reflected throughout the individual stone through its facet arrangement. Choose the shape that you like based on your style and you cannot go wrong. 

 Diamond Guide


The cut of a diamond determines its brilliance or sparkle. Each shape will be cut differently. Before a diamond is cut, the location of inclusions and flaws, the natural coloration, and the original shape of the rough stone are studied extensively. The stone facets are then mapped out and cut in a way that maximizes size, shape, and clarity. For optimal light performance and rarity, you will want a diamond that is cut neither too shallow nor too deep. 

Diamond Cuts


Color refers to the natural body color of a diamond. Diamonds with less color allow more light to pass, releasing more brilliance and fire.  The scale runs from D (colorless) to Z (light yellow). The less color a diamond exhibits, the higher the rarity, and therefore the higher the value. Although some people prefer warmer toned diamonds, especially when being placed in yellow or rose gold settings. 

Diamond Color Scale


A diamond is distinguished by its natural characteristics, just as a person would be noted for her blue eyes or his brown hair. Notated as a diamond's clarity, these characteristics can be present on the surface (blemishes) or within the stone (inclusions). The clarity is judged by the number and types of these characteristics and is designated using a scale that runs from Fl, defined as flawless, to I3, defined as inclusions visible with the naked eye. A flawless diamond is truly rare.

FL Diamonds
Flawless: No internal or external flaws.

IF Diamonds
Internally Flawless: No internal flaws.

VVS1, VVS2 Diamonds
Very, Very Slightly included: Very difficult to see inclusions with 10x magnification.

VS1, VS2 Diamonds
Very Slightly Included: Inclusions are visible under 10x magnification to a skilled grader.

SI1, SI2 Diamonds
Slightly Included: Inclusions are visible under 10x magnification and may be visible with the unaided eye.

I1, I2, I3 Diamonds
Included: Inclusions are visible with the unaided eye.

Carat Weight

The unit of measure used for the weight of a diamond is the carat. As a matter of reference, a carat is equivalent to .2 grams or .007 of an ounce. Carat weight can also be divided further by using points. There are 100 points in one carat. So a 1/4 (.25) carat stone can also be expressed as 25 points and mean exactly the same thing. When comparing two diamonds, please note that just because one is twice the carat weight of the other does not mean that it will appear to be twice the size.


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