One of the important characteristics of a diamond is its shape. The outline that is marked on a rough diamond defines the diamond shape. One can understand the diamond shape by viewing the diamond from the table view. Also, due to the thriving demand for diamonds, new shapes are gaining popularity.
Round brilliant cut, pear cut, emerald cut, princess cut, cushion cut, oval cut, marquise cut, radiant cut, Asscher cut, and heart cut diamonds are popular shapes of the diamond. Besides these fancy shapes, diamonds also include baguettes, tapered baguettes, trillion cut, trapezoid cut, etc.
The terms “diamond shape” and “diamond cut” are different..
Diamond shape refers to outline or overall shape of diamond like round, heart or pear.
Whereas, diamond cut refers to cutting grade or cutting quality of a diamond like excellent, very good, good cut grade.
List Of Popular Diamond Shapes In Australia
Round Brilliant Shape Diamond
This round shape has grabbed the majority of the demand in Australia. Total 75% of the rough diamond are polished into a round brilliant cut. RBC or round brilliant cut diamond has 57/58 facets. Total 25 pavilion facets (bottom facets) and 33 crown facets (top facets) are defined in 58 facets. Moreover, because of the high precision in cutting and polishing the round brilliant cut diamond gained maximum fire and brilliance. This factor leads to making the cut more classic and elegant.
Emerald Shape Diamond
The name is called as an emerald shape as this cut was first faceted on the emerald gemstone. This glamorous shape showcases prominent features in rectangular as well as a square shape. The emerald shape can have from 50 facets to 58 facets. The length width ideal ratio of this shape is 1.40 to 1.50.
Due to the large table size, this shape tends to reflect maximum light. Moreover, this large facet results in clear visibility of inclusions. Therefore, lower clarity grades in emerald shape should be avoid. Also, because of their shape, these diamonds deliver moderate fire and maximum mirror-like effect.
Princess Shape Diamond
This beautiful shape diamond has set a trend after the round brilliant diamonds. They are more preferred after round diamonds as they have a bold and spectacular shape.
The length and width ratio of the ideal princess shape diamond is 1.00 – 1.05. Square modified brilliant cut is another name for Square princess diamond. In addition, they are classified as perfect shape following round diamonds because of the facets. They are polished into 57-58 facets. And also reflect good brilliance and fire. Also, because of their edgy and prominent angles, they make a perfect match for engagement rings.
Asscher Shape Diamond
The Asscher brother invented the cut Asscher in 1902. Additionally, the cut became popular during the art deco period. Therefore, was also termed as the vintage cut. The length and width ratio for ideal square Asscher shape diamonds is 1.0-1.05.
This cut is a combination of emerald cut and princess cut. Therefore, it features more layered facets as well as a smaller table. Due to its square facts, they tend to have more reflection resulting in high brilliance.
Oval Shape Diamond
In the mid-1900s, this classic cut was invented. Round brilliant cut diamond has influenced this cut. It is the elongated shape of round diamonds. The ratio of ideal oval shape diamond is between 1.30-1.50. This shape is durable than other shapes like marquise and princess shape diamonds because of the non-edgy character. Though having equivalent characters that round brilliant diamonds, they are less expensive than round shapes.
Marquise Shape Diamond
The marquise shape diamond is merged from round brilliant and pear shape. The ideal length and width ratio of marquise shape is 1.85-2.1. Due to its unique cut, the shape consists of numerous names like boat cut, football cut and even eye cut.
This shape plays a crucial role in beautifying the fingers, as elongated form helps the finger to appear thinner. They are prescribed choice for the solitaire section, due to its larger surface area.
Radiant Shape Diamond
In 1977, Henry Grossbard invented the radiant cut diamond. The shape is beautiful combination of round brilliant shape and princess shape. This shape expels the highest brilliance and fire as it consists of 53-70 facets. Due to this quality, they are an exceptional choice while buying. They are never unnoticed when studded in rings.
The length-width ratio for an ideal square shape radiant cut is 1.0-1.05. Whereas the ideal rectangular radiant cut is 1.25-1.40.
Pear Shape Diamond
The teardrop shape is another name for pear shape diamond as it resembles the water droplet shape. The shape is a merger of marquise shape and round brilliant shape. Hence, it gives a perfect shape due to its brilliant cuts. The length and width ratio of an ideal pear shape diamond is 1.45-1.75. Due to its 58 facts, the shape tends to reflect more fire and brilliance.
Heart Shape Diamond
The heart shape is a principal symbol of love. Therefore, this heart cut is the most premium cut. The cut has to polish with 100% symmetry to achieve a perfect heart shape. Because the cut not following the ideal ratio will turn either into a plump look or elongated heart shape. The length and width ratio of an ideal heart shape diamond is near 1.0
Cushion Shape Diamond
Also popular with the name pillow cut, the shape is a sequence of princess shape and round brilliant cut. Due to the merger of these two shapes, the cushion cut consists of square facets as well as round facets. This shape is polished with a total of 58 facets.
In the rectangular shape as well as the square shape, the cushion shape diamonds are polished. Moreover, the square shape cushion cut diamonds are rare. The length and width ratio of the ideal square cushion shape diamond is 1.0-1.09 whereas for rectangular cushion shape the ratio is 1.15-1.25.
How Diamond Shape affects the price?
The shape of a diamond also plays a critical role in pricing the diamonds along with the 4C’s. The most common and prominent shapes tend to be more expensive than the other fancy shapes.
In general terms, round brilliant shape diamonds are more expensive than the other fancy shape diamonds. This is because round shape diamonds have their proportion standards described. Also high precision is demanded for round brilliant cut diamonds compare to other shapes.