There are 3 main characteristics that determine the value of diamond necklaces, diamond engagement rings and any diamond rings online as well as other unique diamond gifts and wedding anniversary gifts. They are: weight, color, defects (purity).

The weight of diamonds is measured in carats. The name "carat" originates from the name of the tree seeds which in ancient times were used as a standard weight (1 carat = 0.2 grams). By weight diamonds are classified into three groups: small (up to 0.29 ct.), medium (from 0.30 to 0.99 ct.), large (from 1.00 or more). The cost of a stone depends on its weight. Large diamonds are very often used not just as decoration, but as a good investment as well. That is why online diamond gifts are so popular now.

The color of diamonds is so various, from colourless to yellow-brown. There's also a great variety of hues - red, blue, green, pink, purple, yellow. It is well-known that white diamonds are expensive, and the most expensive ones are those with a blue tint. Colored diamonds are more common, and are cheaper than their colorless counterparts.

To determine the colour of diamonds there exists a special scale, where 1 meas absolutely colorless stones, and 9 - stones with a clear yellow colour. Absolutely colorless diamonds are very rare. They usually have a slight yellowish tint, which is invisible without special device. A defect of diamond is a collective term that describes the degree of purity, transparency and corruption of the stone. Absolutely flawless diamond is in fact a theoretical concept, since diamonds, as well as all natural minerals, have some heterogeneity of structure - cracks, inclusions, bubbles.