Your expert opinions please!

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Todd Gray

Nice Ice Ideal Cut Diamonds
GemTrace Laser Inscribed Diamond Registry

Here are some numbers you can use as a guide to help you find a well cut round diamond.  However hearts and arrows is a type of strict precision cut, if that is what you are looking for is a h&a diamond then I would suggest you contact the following vendors who all sell beautiful h&a diamonds.  Basically the proportions are extremely important in order for you to have a beautiful diamond, but the overall cut precision is crucial if you want superb h&a patterning, and images particularly of the hearts from the underside of the diamond are imperative.  Really it is easier to go with one of the vendors below to get a h&a diamond, also you can find some well cut diamonds may show a strong arrow pattern and hearts but do not meet the standards as stated by experts.  Often the hj&a diamonds will also be AGS0 cut grade, some of which can fall within the numbers suggested below.

Also this tutorial explains further.

http://diamonds.pricescope.com/hna.asp

www.goodoldgold.com

www.highperformancediamonds.com

www.briangavindiamonds.com

www.niceice.com


depth - 60 - 62% - although my personal preference is to allow up to 62.4%
table - 54- 57%
crown angle - 34- 35 degrees
pavilion angle - 40.6- 41 degrees
girdle - avoid extremes, look for thin to slightly thick, thin to medium etc
polish and symmetry - very good and above

 note - with crown and pavilion angles at the shallower ends ( CA 34- PA 40.6) and steeper ( CA 35- PA 41) check to make sure these angles complement in that particular diamond - eyeballs, Idealscope, trusted vendor input - check as appropriate!

As the above implies, configurations depend on each other.  A little give here can still work with a little take there.

With that said, here's a "Cliff's Notes" for staying near Tolkowsky/ideal angles with GIA reports (their numbers are rounded):  A crown angle of 34.0, 34.5 or 35.0 is usually safe with a 40.8 pavilion angle.  If pavilion angle = 40.6 lean toward a 34.5-35.0 crown.  If pavilion angle = 41 lean toward a 34.0-34.5 crown.

GIA "EX" in cut is great at its heart, but it ranges a bit wider than some people prefer, particularly in deep combinations (pavilion > 41 with crown > 35).

Nothing is more sacred as the bond between horse and rider...no other creature can ever become so emotionally close to a human as a horse. When a horse dies, the memory lives on because an enormous part of his owner's heart, soul, very existence dies also...but that can never be laid to rest, it is not meant to be...
- Stephanie M Thorn