Loose Diamonds Prices

Have you ever wondered what goes in to putting that price on the world’s most rare stone? A lot of factors contribute towards setting the price.

How are diamonds priced? (Find the best place to buy diamonds online at this diamond store review page.)


Diamonds come in various colors and there are two systems that are used to grade diamonds according to their yellowness. The 1st system grades the from D to Z. D is assigned to those diamonds that are colorless and then proceeds all the way to Z which is assigned to the most yellow diamond. The second system grades the diamonds and puts them into groups according to different variations in their color.

DEF=colorless, GHIJ=near colorless, KLM=faint yellow, NOPQR=very light yellow, STUVWXYZ= light yellow. At the end is fancy colors but this is not assigned to any letters.

The most expensive diamond start from D becoming cheaper as you proceed. Also expensive is the red diamond because it very rare and intense natural colors like pink and blue. It is good to note that not all colored diamonds are natural and some are treated with harmless radiation.

These come at a lesser cost. Be sure to determine the value by color of a diamonds in its loose form. Jewellery can give illusions and make the diamond appear more whiter, yellow or platinum.


It is much more complex to use this factor to determine the price of a diamond and this is why. Cutting of a diamond is done by human hands and the diamond cutter is the one who determines the size of the stones, the imperfections left on the stone and its shape.

The diamond cutter must also use his craftsmanship to determine the level of sparkle. All these have to be done very carefully so as not to ruin the diamond’s symmetry and this will also reflect on the pricing.

Properly cut diamonds allow light that gives a diamond its dazzle. If improperly cut, light will leave through its bottom and make it look dull hence will be cheaper. A symmetrical diamond will have great brilliance, sparkle and fire and more expensive.

There are also many shapes a diamond can be cut to. The more fancier shapes are more expensive and vice-versa.


Some characteristics like scratches, trace minerals of a diamond can affect the way the light bounces off from the diamond’s mirrors. These flaws are called inclusions. Flawless diamonds are a rare find and are therefore more expensive.

These inclusions are identified with a magnifier of 10x. The following are derived from GIA (Gemological Institute of America) and AGS (American Gem Society).

  • Feathers which resemble a bird’s feathers and can be a problem if closer to the surface.
  • Clouds which can cause the diamond to break if closer to the surface.
  • Needles that look like tubes can also cause diamond to easily crack if close to the surface.
  • Pin points that look like white bubbles and can affect how light gets distributed.
  • Carbon spots can lower the price of the diamond if they are close enough to distract from the beauty of the stone.

Carat weight.

This is the weight of the stone and not the size. Some bigger stones have less carat weight. It is measured in millimeters by weighing and this gives you the most accurate weight. Carat weigh plays the most important role in diamond pricing. The higher the carat weight, the more expensive the diamond.

To learn more about the 4 C’s of diamonds read our complete buying guide.