Cut: the secret of a brighter diamond
The beauty of a diamond comes from its brilliance and fire, the amount of light that is returned to the viewer's eye. It is the proportions of the Cut that unleashes an extraordinary shower of light from the rough stone into a finished diamond. In a side by side comparison, a less expensive diamond of Excellent Cut grade will far outshine a diamond of higher Color and Clarity with a Poor, Good or Fair Cut grade. The diagram to the left shows how light leaks out of inferior Cut grades. At labdiamond.com, all of our simulated diamonds are guaranteed to be either Excellent or Ideal Cut grades.

Diamond Color: Beauty versus cost
Diamond Color is usually ranked on the GIA grading scale (shown on the left).
Diamonds are evaluated for color loose in the inverted position within a laboratory controlled lighting booth.
We sell both Colorless and Near Colorless simulated diamond grades on our website. The GIA Color Scale is very minute in divisions of diamond color. When a diamond is viewed loose and upside down, it difficult to perceive the difference between E to H on the color scale. After a diamond is set face up in a mounting, it is nearly impossible for for even an expert gemologist to judge the difference between an E-F color and a G-H color in either daylight or indoor lighting conditions. All our NANO stones are in the color range of G-H . Plain uncoated cz's are usually always D-E .

Diamond Clarity: Beauty versus cost
Diamond Clarity is usually ranked on the GIA grading scale (shown on the left). It may come as a surprise, but the GIA Clarity rankings are based on the rarity of a diamond, not necessarily it's beauty, brilliance or value. A diamond with a high Clarity ranking can be rare and expensive, but downright ugly if it does not meet high tolerances for Color and Cut as well. With surface enhanced diamond simulants, you get the best of all three C's.