Diamonds are sold in carats. Carat is a unit of weight and it comes from carob seed. It is the original unit of measure for traders of diamond all around the world. One carat is equal to 0.2 grams. However two diamonds of equal carat can have different prices based on other factors like clarity, cut or color. The price of the diamond increases as the carat weight increases, as the diamond gets larger and larger. Also if the carat weight increases you will have to pay the price on the basis of price per carat.
Diamonds, one of the most precious stones that mankind can ever possess. It is the epitome of benevolence, prestige, and optimum luxury. Diamonds can win hearts and have the power to uplift man from rags to riches. However like every other stone, there is a set of particular facts and figures that are quite interesting.
There are different types of diamond cuts and there is a collection of measurements and observations that determine the relationship between the dimensions and finish of the diamond. The most common shapes include round, square (cushion), heart shape, pear shaped, oval, rectangular (princess, radiant, emerald, and Asscher), and marquise. However the round brilliant is the most expensive cut of diamond.
Diamond grading reports contain the analysis or assessment of the polish and symmetry of a diamond. These are the contributing factors in determining the overall quality of the diamond. There are specific features and visibility that evaluates polish and symmetry of diamond. The features and visibility are considered fewer than 10 x magnifications by GIA and rated on the scale ranging from excellent to poor. Polish features include abrasion, burn, laser manufacturing remnant, lizard skin, nick, pit, rough girdle, scratch and polish lines. Location of each polish features are specified as bezel facet, chevron facet, crown corner step facet, crown facet, crown, crown step facet, culet, girdle, half moon facet, lower half facet, pavilion main facet, pavilion, pavilion step facet, pavilion facet, star facet, and table facet. It is rare to find diamonds without these birthmarks and none are perfect to the optimum level under 10x magnification.
Color is quite an important characteristic that affects the look and quality of the diamond. Pure diamonds are perfectly colorless and transparent. However diamonds occur in a variety of colors like gray, blue, white, yellow, orange, green, pink, black, purple and brown. The color is due to interstitial impurities or other structural defects that cause the coloration of the diamonds.