Wholovesskunks
Shiny_Rock
- Joined
- May 18, 2017
- Messages
- 169
What's their return policy? Maybe you could have them send it to you for inspection and then decide.They didn't have any stones with the Blueprint besides this one in my price range. I asked. They couldn't get video on any of them either. I asked which one they thought to be the best option and they said hands down this one and I wouldn't be disappointed.
That's the one that I need a crown angle for. How do I find that?Use this look to the AGA/NAJA Cut grading/screening tool on Pricescope which has automated use of the chart you were initially given a link to. Without following the rules automated in the chart, you may not get reasonable results. Here is the correct link for the grader: https://www.pricescope.com/tools/AGA_NAJA_Cut_Class_Grader
There is no cut grade for Emerald Cuts at GIA. The only information offered by GIA about the cut is if the symmetry features (facet sizes, shapes & junctions meeting points) were placed correctly and the facet surfaces are polished adequately.
I constantly see GIA Ex/Ex Emerald Cuts (and most other fancy shapes) which perform oppositely from their symmetry and polish grades and seeing plenty of fair/good grades perform and look amazing. The symmetry and polish grades of GIA fancy's are confusing at best.
As ILikeShiny said, it's the crown height percentage (not angle) which you need to use that tool & GIA's reports for emerald cuts don't give you a crown height %, but Sarin reports for emerald cuts do.That's oldminer's (David Atlas') AGA/NAJA cut grading-screening tool one] that I need a crown angle for. How do I find that?
Also, personal preferences come into play. There is much variation in the faceting of emerald cuts & not everyone likes them all. For example, there is one in Good Old Gold's current in-house listings where the ASET is fine & a wholly detached viewer would see the video as cause for concern, but it's an EC I would not be happy with because I really don't like the "pattern."No formulae, no guarantees. There is no magic shortcut or guaranteed specifications or even a range, I'm afraid. I've seen all to many ECs with supposedly sweet numbers that were duds. It is all about how ALL the angles (not just table and depth percentages) work together, especially P1, P2 and P3 in the pavilion, which are never noted in the lab reports.
Use this look to the AGA/NAJA Cut grading/screening tool on Pricescope which has automated use of the chart you were initially given a link to. Without following the rules automated in the chart, you may not get reasonable results. Here is the correct link for the grader: https://www.pricescope.com/tools/AGA_NAJA_Cut_Class_Grader
As ILikeShiny said, it's the crown height percentage (not angle) which you need to use that tool & GIA's reports for emerald cuts don't give you a crown height %, but Sarin reports for emerald cuts do.
But honestly, even tho' a Sarin report can fill in that blank, I agree with chrono, who has said here, more than once:
Also, personal preferences come into play. There is much variation in the faceting of emerald cuts & not everyone likes them all. For example, there is one in Good Old Gold's current in-house listings where the ASET is fine & a wholly detached viewer would see the video as cause for concern, but it's an EC I would not be happy with because I really don't like the "pattern."
Have you been able to examine a fair number of ECs in real life? Although they are more often seen in brick-and-mortar stores than used to be the case, they aren't a dime a dozen in local jewelers' display cases. Also, by any chance, do you live within convenient distance to NYC?
I've been trying to push B2C a bit more for info on the stone. Here's what I got this morning.
11:06 AM
Krista
My biggest concern is why does there appear to be so much light leakage? Do you think it's a malfunction issue or the machine?
11:07 AM
Alex Johnson
I would like to inform you that Aset Ideal scope is basically used on round diamonds to check the light performance it is not use for fancy cut diamonds.
First off ASET and ideal scope are 2 different things and ASET is used on fancy cuts. No scope on any diamond will give the entire picture but can be used to find major issues
11:10 AM
Alex Johnson
Krista Aset and Ideal scope images were made to check the light performance for round diamonds however if we click that for fance diamonds the shapes are different so it we not give you complete information about light performance as if you check for round diamond facet are 57 and in fancy there are more than round and however if we click image it will show as leakage.
Huh that makes no sense.
11:11 AM
Krista
So the gemologist does believe it has great light performance then?
11:13 AM
Alex Johnson
Yes our diamond partner gemologist gives comments on this diamond they informed us that it has excellent light performance also as it is an IF clarity diamond it gives more sparkle and fire performance.
I did read. It asks for a crown height percentage not angle. That was a typo on my part. The crown height percentage is required for the tool. The seller did not say every fancy shape diamond they sell is excellent. They aren't. There are many EC's that are listed as very good, good, and fair. That is why I'm trying to understand why this stone is labeled as excellent cut by them. According to the tool, as long as the crown height percent, which I don't know right now, is between 9-17.2% it could have a grade from 1A-2B. Of course the crown height could be lower or higher and that would give it a lower grade.The calculator tool does NOT require or ask for a crown angle on anything but round diamonds. Read carefully and you will see you are just not reading first. This is a screening tool, not a way to make a final choice. It is very true that cutters can make a very pretty diamond or a rather un-pretty stone with the same or close to the same measurements. However, when allowed the choice, a cutter will try to make a diamond beautiful rather than ugly. It makes better business sense especially now when so many consumers expect some kind of high range light return on their chosen diamond.
In spite of many naysayers, this system can help find a diamond that has less cutting faults than another and has a good chance of performing well with not only light return, but with apparent size for its weight. These are good things to help you find a better diamond.
When a seller tells you every fancy shape diamond they sell is "excellent" cut, they are testing you to see if you understand or if you have not done your homework. The ones who say no one can grade more than a couple fancy shape diamonds have their own agendas and may not be thinking of how to make things better instead of just encouraging the status quo. Any fancy which grades 2B or higher may have a good chance of becoming a great choice. There are far more which grade lower, 3A and down, that will have more serious defects in proportions or cut which will always remain a detriment to quality or apparent size. They may look fine, but not everything is fine with those.
Not every characteristic of a diamond improves or decreases light performance. Some characteristics improve or decrease durability, and/or visible size to weight ratio. Some do have effects on light return which can be predicted by proportions. This system can help you choose diamonds with more likelihood of having fewer issues and better looks.
Isn't this scary? How is someone who doesn't understand or is new to all of this make an informed decision if they are receiving incorrect info from the reps? I went through B2C because they seemed to be knowledgeable and had great reviews. I'm glad there is a 30 day return policy. My fingers are crossed that it is beautiful in real life but if not it will go back."as it is an IF clarity diamond it gives more sparkle and fire performance."
Someone toss me a shovel its getting really deep in here!