With the arrival of the Internet consumers have become more informed and educated about the differences in the quality of cut and its effect on performance…
From the Internet Boom to Transparency
The advent of the Heart and Arrow effect in the market became a tool for consumers to see perfection in optical symmetry.
Since optical symmetry is difficult to quantify because of the variations between each cutter and each stone, criteria needs to be standardized for consumers to avoid discrepancies.
Therefore just as the labs grade Color, Clarity and Cut, they should grade Hearts and Arrows too.
Diamond Manufacturers should be rewarded for their excellence in producing an optically symmetrical stone and consumers need to be able to purchase with assurance and comfort.
The Process of Polishing Diamonds
How The Hearts Are Formed
Sequence To The Formation
It takes a total of 5 different facets to work in harmony to create one heart. That is 2 main pavilion facets and 2 Lower girdle facets and 1 Star facet from the crown.
See Above: Pictures 1 & 2: without star facets and note the squared off heart shape in Picture 3 & 4: with the star facet in place, Picture 3: without upper girdle facets and Pictures 4: with upper girdle facets.
- If the physical symmetry, meaning the meet point symmetry, as well as indexing is out the slightest, the optical symmetry will be affected.
- The optical symmetry will clearly show the physical symmetry being in or out of perfect harmony.
- The lack of optical symmetry will be seen very clearly when viewing the diamond through a Hearts and Arrows scope.
It is easier to camouflage errors in the formation of the arrows, as there are less facets to align, but it is impossible to hide any inconsistencies in the heart pattern. There are 5 facets that complete each heart shape, in addition, the upper girdle facets complete the patterning around the outside circle of the pavilion and the slightest deviation is easily noticed.
How The Arrows Are Formed
THE 8 MAIN PAVILION FACETS ALSO CAUSE THE ARROW EFFECT