They won't depreciate or wear out like a car in few years. It's important to focus on finding the finest stone that fits in your budget. Clarity Clarity grades are determined under magnification. One misconception is that clarity affects the brilliance of the diamond. Inclusions are almost always so small that they have no measurable affect on the diamond's brilliance.
Brilliance is almost entirely the result of the cut and proportions of the diamond.
Laboratory certificates are a diamond's pedigree but they usually add a premium to the cost of the diamond. Most diamonds occur in nature having minute impurities causing them to have a slight yellowish cast. The more a diamond approaches absolutely colorless, the whiter it appears when cut. Colorless diamonds are quite rare in nature and are therefore the most expensive. This scale ranges from colorless to yellow.