Aggie Lala. Diamonds. August 12th , 2017.
Diamonds are graded according to the values of the 4Cs, which is for color, clarity, cut, and carat. First of all, make sure that the pendent you have selected has made-up of fine cut diamond. A brilliant-cut diamond proves the luster and brilliance of a diamond piece. The carat defines the size of this precious stone. Carat value matters while you are going to select a pendant. The small carat value means the small size of stone and the larger diamond size has a big carat value. You should pick the piece which can be visible from a genuine distance with the naked eye.
Brightness: Here, the refractive index of both the stones play a crucial role. Refractive index is defined as the ratio of the velocity of light in a vacuum, to that in a medium. In the case of dispersion by gemstones, the refractive index is simply the measure of the degree by which a beam of light bends, when it traverses between two mediums of different optical densities. For example, a beam of light when traveling between air and CZ would bend by a degree, different from the degree while traveling between air and real diamond. So, the refractive index of diamond (2.417), being higher than that of CZ (2.176), diamond presents brighter appearance than cubic zirconia.
Diamonds are lightweight as compared to cubic zirconia. The weight of the latter one is about 1.75 times than that of diamonds. To understand better, let's take an example of a one-carat diamond; cubic zirconia of the same size will weigh 1.75 carats.
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