Learn About Diamonds

The 4C’s classify the value of diamonds.  Every diamond’s price, rarity, and beauty are determined by the combination of cut, color, clarity, and carat weight.


Cut describes the proportions and angles of a diamond.  Many people confuse cut with the shape of a diamond.  Although nature determines the other three characteristics, it takes a master diamond cutter to reveal a diamond’s true beauty.  Diamonds are available in various shapes including round, square, pear, heart, marquise, and oval but cut refers to the angles and proportions of a diamond.  A well-cut diamond reflects light from one mirror-like facet to another and projects the light through the top of the stone.  The result is a fiery and brilliant display.  Diamonds that are cut too deep or too shallow leak light through the side or bottom, resulting in a lackluster appearance and diminished value.diamond cuts





Inclusions are measured on a scale of perfection, known as clarity, which was established by GIA.  The greater a diamond’s clarity, the more rare and valuable it is.  An inclusion in the middle or top of a diamond could impact the dispersion of light, making it less brilliant.diamond clarity

Carat Weight

Carat is a diamond’s measure of weight, not size.  One full carat is equal to 100 points.  A ¾ carat diamond is the same as 75 points.  Since larger diamonds are found less frequently in nature, a 1 carat diamond will cost more than twice a ½ carat diamond (assuming all other characteristics remain constant).  The cut and the mounting can make a diamond appear larger than its actual weight.  Your Master IJO Jeweler will help you find the right diamond and mounting to optimize its beauty.