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The cut will depend on the gemologist’s assessment of the rough diamond. The analysis is exhaustive. Three factors will determine the cut of the diamond: the brilliance (the amount of light the diamond reflects), the scintillation (this refers to flashes of light) and fire (the bounce of light inside the diamond creates a colour spectrum inside).

If the diamond is not cut to the appropriate depth and surface measurements, the depth of light could be lost, reducing its brilliance and thus, its value. The cut of a diamond must have the most perfect combination possible with regard to proportion, symmetry and shine.


Parts of the Diamond:

Diameter: width of the diamond or middle of the girdle
Table: upper face of the diamond and the most polished part.
Crown: the section between the girdle and the table.
Girdle: the section where the crown finishes and the pavilion starts. It is the widest part of the diamond.
Pavilion: it starts at the girdle and finishes at the culet. It is the lower part of the diamond.
Depth: full length of the diamond. It is measured from the crown to the culet.


The levels of cut range from excellent, very good, good and acceptable to poor, according to how the diamond reflects light.


Types of cut:

Round Cut: is the most widespread cut and is known as a “brilliant” diamond. It requires advanced technical and technological skills to achieve perfect proportion and symmetry.
Princess Cut: although it is usually square, it may also be rectangular. It has the same brilliance as the round diamond.
Emerald Cut: it is usually a rectangular cut and usually looks like the natural form of the diamond stone. It has a big open table with steps. It is not as brilliant as the preceding cuts, but is considered elegant and classic. With this type of cut, inclusions are easy to detect.
OvalOval Cut: it has a high level of brilliance, as it is a modified form of the round cut.
MarquiseMarquise Cut: it has the form of a woman’s mouth, inspired by the Marquise of Pompadour. This peculiar form gives the feeling of a heavier, larger diamond. It is also an adaptation of the round diamond and so is highly brilliant and reflects light very well.
radiantRadiant Cut: this type of cut is rectangular. The first diamond was cut this way. In jewellery, it is generally used for the central stone in rings and also on earrings. It is rarely used for coloured diamonds as its form intensifies the colour.
HeartHeart Cut: this is the ideal form for demonstrations of love, as it has a romantic connotation. It may have inclusions or impurities in its corners.
PearPear Cut: also a cut based on the configuration of the round cut. It has the shape of a pear or teardrop. It is usually used in rows on necklaces, earrings and engagement rings.

Advice for choosing a diamond based on cut:

– It is important to view it in the light and observe how it reflects light inside it, creating a rainbow of colours.
– You are advised to ask the gemologist about the different cuts and forms available.
– Make sure you choose the perfect form for you, according to your tastes and requirements.


The others 4C:




At The Diamond Palace you can purchase certified loose diamonds. Our gemologist will answer all of your questions and will help you chose the optimal diamond for you. GIA, HRD, IGI certified diamonds in Barcelona at The Diamond Palace.