Diamond Education
Learn all about the 4C's of Diamonds
Carat
One carat equals to 0.2 grams or 200 milligrams. Carat weight is the prime factor that determines the weight of a diamond. Larger diamonds are undoubtedly costlier. Carat makes expressing diamond weight easier as compared to milligrams. Instead of giving three labels to diamonds weighing 20 milligrams, 211 milligrams and 220 milligrams, carat offers a category for fitting the diamonds in a one category, placing these diamonds in one-carat range.
One should not forget that high carat weight does not necessarily mean a larger looking diamond. Even diamonds of the same weight can differ on a basis of other factors, especially cut that influences perceived size. Large diamonds are rare to find and much in demand as compared to small diamonds even of the same quality. The price of a one-carat solitaire diamond ring is more than a ring with smaller diamonds making up the same carat weight. Diamond comparison is not effective until you compare the diamonds of similar features and qualities. While comparing the value of different diamonds, divide cost of every diamond in accordance with the carat weight and then calculate its price per carat.
Clarity
Clarity refers to the presence of natural characteristics within a diamond, such as inclusions (internal features) and blemishes (surface marks). Because diamonds form deep within the earth under immense heat and pressure, it is normal for them to contain small imperfections.
Inclusions may appear as crystals, tiny fractures, or other naturally occurring features. Blemishes often develop during the cutting and polishing process. Diamonds with fewer visible characteristics are considered more rare and valuable.
Each GIA certified diamond includes a unique clarity plot that maps these characteristics, ensuring that the diamond you purchase is accurately graded and identifiable. If you want the rarest clarity grade, Flawless sits at the top of the scale, though beautiful options exist across all clarity ranges.
Color
When jewelers talk about a diamond’s color, they are referring to how much (or how little) body color the stone displays. The most desirable diamonds are colorless, allowing light to pass through and create exceptional brilliance.
The GIA color scale rates diamonds from D (colorless) to Z (light yellow or brown).
Diamonds graded D–F are considered the highest quality for color and are prized for their icy white appearance. Those in the G–J range offer excellent value, appearing nearly colorless to the untrained eye while typically costing less.
A diamond’s color is determined during formation and does not change over time, making it an important part of its long term value.
Cut
Cut is often the most influential factor in how beautiful a diamond appears. Unlike shape, which refers to the outline of the diamond, cut describes how well the stone’s facets interact with light. A well cut diamond will reflect light back to the viewer with exceptional sparkle, fire, and brilliance.
When the proportions, angles, and symmetry are expertly crafted, light enters through the top of the diamond and returns upward, creating that signature radiance. If a diamond is cut too deep or too shallow, light escapes from the bottom or sides, reducing brilliance.
GIA cut grades range from Excellent to Poor.
A diamond with an Excellent or Very Good cut grade will maximize sparkle and is often the most visually impressive choice, even at lower carat weights. Fair and Poor cuts may appear dull because they are shaped primarily to retain weight rather than beauty.
