Choosing A Diamond

Start with the shape:
The most popular diamond shape is the round brilliant. It has an arrangement of fifty-eight facets, which cause the light beams to bounce from the pavilion back through the crown.

Other shapes include:
Oval, Marquise, Heart, Pear, Triangle, Long Radiant, Emerald, Long Princess, Radiant, Cushion, Princess and Asscher

Asscher
Emerald
Heart
Oval
Pear
Princess
Radiant
Round


The 4 Cs:
  • Carat Weight
    The size of a diamond is measured in carat weight. A carat is equivalent to 0.2 gram.


  • Clarity
    Paradoxically, the term clarity is mainly used to refer to the flaws in a diamond.
    The Internally Flawless Grade (IF) describes diamonds which have no internal characteristics, but which have minor surface blemishes that do not penetrate the stone.
    • The VVS1 & VVS2 grades (Very, Very Slight Included) are used to describe diamonds which have very, very small inclusions.
    • The VS1 & VS2 grades (Very Slight Included) are used to describe stones with very small inclusions.
    • The SI1, SI2 & SI3 grades (Slight Included) are used to describe stones with small inclusions.
    • The I1, I2 & I3 grades (Included) are used to describe stones with medium or large inclusions.
  • Cut
    The term cut is used in several ways. It refers to the facet arrangement on the surface of the diamond. Brilliance pervades a well-cut diamond. Cut is also synonym for shape. E.g. round, brilliant cut diamond
  • Colour
    Diamonds are found in a range of colours, the rarest being colourless or fancy colours such as greens, blues and reds. A letter is assigned to a colour grade. The colour grading scale begins with D, the best colourless stone, to Z. Good stones range from D through I.
    On the opposite end of the spectrum, yellow and pink diamonds have their own grades. Adjectives are used to describe the degree of colour, otherwise known as saturation.