Cut

Proportions are determinative for the brilliancy and the „fire“ of a diamond.Symmetry describes the variation of the different parameters that define the proportions.  Polish describes the finish of the facets.

Clarity

All diamonds have traces of their growth history. In gem Quality diamonds these are minor internal characteristics. The clarity scale reflects the size, number and location of the characteristics when examined with a loupe (magnification 10x). Most inclusions are not visible with the naked eye. Diamonds that have no inclusions visible to the naked eye are also of excellent quality. The very best  and rarest – clarity is called „ loupe clean“. This means that upon examining the diamond with a loupe, no inclusions can be found.

Carat (Weight)

The weight of diamond is expressed in carats. One carat = 0,2 grams and one carat = 100 points.

Color

The majority of good quality diamonds are colourless to slightly yelowish. The colour grade is determined by comparison with a series of masterstones, the best grade being colourless. (exc. White D). Diamonds can also occur in all ranges of colours, from brownish to striking yellow, pink, purple, red, blue and green.These are called „ fancy colours“. Some diamonds react to UV light with a grading scale for the fluorescense from „ nil, slight, medium to strong“.

Shape

Diamonds can be polished in various shapes. The round brilliant is the best known.