| Author | Topic: price of princess cut 1.13 |
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mbn cut rock Posts: 18 |
posted 09-12-2001 12:10 PM
I came across a princess cut GIA cert dated June 1999 1.13c G/VS 5.95x5.90x4.08 depth: 69.2 table: 69 polish: very good symmetry: good flourescence: none compared next to many other G color VS quality with recent GIA certificate, it looks rather glassier and not as sparkling. I wonder why since it falls into very good cut category. |
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leonid Moderator Posts: 895 |
posted 09-12-2001 12:27 PM
How about crown and pavilion angles? Light performance crucialy depends on their combination. I know GIA doesn't give this info... so if you want to study it deeper you'd need these numbers or use Ideal-Scope to see how much light the diamond leaks. |
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mbn cut rock Posts: 18 |
posted 09-12-2001 04:26 PM
I thought crown and pavilion angles are only important for the rounds. |
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leonid Moderator Posts: 895 |
posted 09-12-2001 04:59 PM
Crown and pavilion angles are important for any shape of diamond because they determine whether light will return to your eyes. If you will look at AGA charts, www.gemappraisers.com , you'll see that crown angle is there. |
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mbn cut rock Posts: 18 |
posted 09-12-2001 05:08 PM
I wonder if crown and pavilion angles are so important, why GIA doesn't list them on certificate. Most info site on internet led me to believe that fancy cuts have no standards, so go by length:width, depth, table size, etc. but didn't mention the crown and pavilion angles. |
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leonid Moderator Posts: 895 |
posted 09-12-2001 05:13 PM
GIA is a little late with this. Other labs already provide this info. There are rumors that GIA is going to change their reports and add more cut related information to their reports. |
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mbn cut rock Posts: 18 |
posted 09-12-2001 05:48 PM
I wonder since knowing total depth does not mean stone is pretty. Isn't it more useful to list the pavilion depth and crown height instead? |
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Cut Nut cut rock Posts: 256 |
posted 09-13-2001 04:34 AM
You are right the GIA is wrong. They are working to rectify this by early next year. garry h |
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