The Ultimate A-Z Jewelry Guide



Aquamarine, the stone of the sea, ranges from greenish blue to deep blue in color and is part of the beryl family of gemstones.

It is most often found in locations that produce ordinary beryl such as Sri Lanka and Brazil.


In layman’s terms, brilliance is how much a gemstone sparkles. Brilliance is measured by gemologists using a special scale that determines a diamond’s light return.

4 Cs

CUT: How a diamond has been cut, polished and to what proportions and symmetry are of utmost importance as these factors determine the life, brilliance and dispersion of the diamond.

COLOR: Most fine diamonds vary in shade from colorless to yellow, brown or gray. To determine the color grade, diamonds are compared to an internationally accepted master set of diamonds, the color of which ranges from D, or colorless (the most sought-after), to Z (the least desirable).

CLARITY: The clarity of a diamond refers to the amount, size, type and location of internal flaws (inclusions) or surface imperfections (blemishes) visible in a diamond using x10 magnification. All diamonds have imperfections in them. The “cleaner” the diamond, the higher the value.

CARAT: The weight of a diamond is measured in carats. A carat is 0.2 grams and there are 100 points (or 200 milligrams) per carat. With an accuracy of 1/100,000 of a carat, the International Gemological Institute’s scales provide a highly precise diamond weight that is stated on the institute’s Diamond Report to two decimal points.