Martin Oliva – Exclusive Diamond Jewellery 0

Diamond Buyer’s guide

Diamond Buyer’s guide

Diamond Anatomy

anatomia diamentu

Are you wondering what on earth is the diamond’s pavilion, table or culet? The graphic and supporting text below explain the various “parts” of a diamond.

  • Diameter – The width of the diamond as measured through the girdle.
  • Table – This is the large, flat top facet of a diamond.
  • Crown – The upper portion of a cut gemstone, above the girdle.
  • Girdle – The narrow rim of a diamond that separates the crown from the pavilion. It is the largest diameter to any part of the stone.
  • Pavilion – The lower portion of the diamond, below the girdle. It is sometimes referred to as the base.
  • Culet – The tiny facet on the pointed bottom of the pavilion, which is the portion of a cut gem below the girdle.
  • Depth – The height of a gemstone, from the culet to the table.

Grading Diamonds and the 4 C`s

Various characteristics of diamonds are graded and categorized by the diamond industry. Learning about diamonds is first learning about the “four Cs” of diamonds which are considered the most important grades and categories:

 

Click on each of the items above to learn more about it.

These are the criteria jewellers use when grading diamonds and they’re the ones you’ll need to understand to buy the right diamond for you.
And then there’s the “Fifth C”:

 

Diamond Shapes

Round Brilliant Diamonds

This shape has set the standard for all other diamond shapes, and accounts for more than 75% of diamonds sold today. Its 58-facet cut, divided among its crown (top), girdle (widest part) and pavilion (base), is calibrated through a precise formula to achieve the maximum in fire and brilliance.

Oval Diamonds

An even, perfectly symmetrical design popular among women with small hands or short fingers. Its elongated shape gives a flattering illusion of length to the hand.

Marquise Diamonds

An elongated shape with pointed ends inspired by the fetching smile of the Marquise de Pompadour and commissioned by the Sun King, France’s Louis XIV, who wanted a diamond to match it. It is gorgeous when used as a solitaire or when enhanced by smaller diamonds.

Pear Shaped Diamonds

It is shaped like a sparkling teardrop. It also belongs to that category of diamond whose design most complements a hand with small or average-length fingers. It is particularly beautiful for pendants or earrings.

Heart Shaped Diamonds

This ultimate symbol of romance is essentially a pear-shaped diamond with a cleft at the top. The skill of the cutter determines the beauty of the cut. Look for a stone with an even shape and a well-defined outline

Emerald Cut Diamond

This is a rectangular shape with cut corners. It is known as a step cut because its concentric broad, flat planes resemble stair steps. Since inclusions and inferior colour are more pronounced in this particular cut, take pains to select a stone of superior clarity and colour.

Princess Cut Diamond

This is a square or rectangular cut with numerous sparkling facets. It is a relatively new cut and often finds its way into solitaire engagement rings. Flattering to a hand with long fingers, it is often embellished with triangular stones at its sides. Because of its design, this cut requires more weight to be directed toward the diamond’s depth in order to maximize brilliance. Depth percentages of 70% to 78% are not uncommon.

Triangle Diamonds

This is a spectacular wedge of brittle fire. The exact design can vary depending on a particular diamond’s natural characteristics and the cutter’s personal preferences. It may be a traditional triangular shape with pointed corners or a more rounded triangular shape with 25 facets on the crown, 19 facets on the pavilion, and a polished girdle. It is definitely for the adventurous.

Radiant Cut Diamonds

This square or rectangular cut combines the elegance of the emerald shape diamond with the brilliance of the round, and its 70 facets maximize the effect of its colour refraction. Because of its design, this cut requires more weight to be directed toward the diamond’s depth in order to maximize brilliance. Depth percentages of 70% to 78% are not uncommon.

Cushion Cut Diamond

An antique style of cut that looks like a cross between an Old Mine Cut (a deep cut with large facets that was common in the late 19th and the early 20th centuries) and a modern oval cut. Recently this shape is becoming very popular.

back to top