Understanding the grading chart.

[saytoken]

If I''ve a ROUND stone with a depth of 59%, does it fall under Class1A, Class1B on this chart ?
http://diamonds.pricescope.com/round.asp

Seems both class covers the same range.

Thanks.
Ken.

 

[belle]

you would need all of the numbers (crown, pavilion, depth etc..) together to make that determination. diamonds are graded as a whole, not on just one aspect.