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Diamond Education

Certified Loose Diamonds

You've done the hard part and found the perfect girl. Let us help you find the perfect diamond. We have a large inventory of certified diamonds that have been graded by the Gemological Institute of America (GIA), the European Gemological Laboratories (EGL), or the American Gemological Society (AGS). Selecting a diamond can be daunting. Is a diamond with a clarity grade of VVS1 really worth thousands of dollars more than the same stone with a clarity grade of VS2? We’ll help you understand why.

Know the Facts

Is a diamond with a color grade of F that much whiter than a diamond with a color grade of H? With so many loose diamonds to choose from, you can compare diamonds of different carat weight, color or clarity side by side and see if you can tell the difference. Our highly trained staff can help you find your ideal diamond! If you are looking for a very specific stone, our affiliation with some of the nation’s largest diamond wholesalers will guarantee that we can acquire diamonds for you at wholesale prices.

Price Guarantee

Jewelry, especially diamonds should last forever. Jewelry is not just sentimental, it’s also an investment. For this reason, it’s vital to make sure you’re not overpaying for your gems upfront. Inflated retail prices are one of the easiest ways consumers overpay. That is why we ONLY sell at the wholesale price level! We guarantee that you will not find the same quality diamond anywhere else in Hawaii. If, within 7 days of making your purchase you find a lower advertised price than our net price on an identical diamond at an established jewelry business in Hawaii, we will match that price plus give you 2% cash back.

Choosing the Right Diamond

For most people, buying a diamond is a new experience, but that doesn’t mean it should be overwhelming. Understanding a diamond’s quality characteristics is straightforward and simple.

The following explains everything you need to know about a diamond’s characteristics, how those characteristics influence appearance, and which are more important than others. In just a few minutes you’ll know everything you need to know to find your perfect diamond.


As the name suggests, shape (round, princess, radiant, etc.) describes a diamond’s form, primarily as viewed from above. All diamond shapes have different attributes, but overall the beauty of the individual shapes is a matter of personal taste.


The cut of a diamond determines its brilliance. Put simply, the better a diamond is cut, the more it will sparkle.


A diamond’s color grade actually refers to the lack of color. In other words, diamonds that are white, containing little or no color, receive higher quality grades than those with visible color.


Almost all diamonds have tiny imperfections. Diamonds with few or no imperfections receive the highest clarity grades.

Carat Weight

This is the term with which people are most familiar, but bear in mind that carat is specifically a measure of a diamond’s weight.

GIA Certification

Unbiased diamond grading reports are offered with every Robert Palma Designs diamond.


Our quality standards are among the highest of all jewelers. As the largest online diamond retailer, Robert Palma Designs offers the largest collection of the world’s finest cut diamonds. Pre-selected for exceptional quality, the cut, color, and clarity of our loose diamonds are evaluated based on a standardized grading scale. Also, each loose diamond is accompanied by a grading report from GIA certified diamond grading labs with the most stringent grading scales of all labs.