Could It Get Any Better? Here’ s A Magnificent Engagement Ring Diamond!

Today’s find is for those who want something that is really going to sparkle in an engagement ring.

For this we have to remember that the cut grade is a very important factor.

Also the closer to “D” the better. With “J” being about the limit where it’s just starting to look ever so slightly yellow or beige.

We found an H diamond which really stood out. The main thing was the perfection of the cut.

The cut grade on a GIA report will be either:

Very Good

On a report issued by AGS Labs it will be:

Very Good

Using the GIA Cut grade estimating tool we can compare a stone which has an AGS Labs report.

Today’s Catch of The Day was a diamond I selected because it is an outstandingly perfect cut. It comes with an AGS Labs report which describes the cut grade as Ideal.

Screen Shot of This Ideal Cut Diamond's Proportions
Proportions of today’s featured diamond

To see if this would also be graded as Excellent by GIA I looked up GIA’s online grading tool. The GIA terms and conditions do not allow me to place a screen shot of the GIA Cut Grade Estimating Tool nor of the results I got but you can see their tool here and try it for yourself:

Entering in all of the proportions as reported on the AGS Labs Grading report shows me that it is indeed an incredibly perfect stone and would undoubtedly be given the highest cut grade of Excellent by GIA. Why is this important? Well, GIA spent 15 years studying how a diamond’s brilliance is perceived. Yes, perceived. Because in the end the most important thing is how it looks. Over 70,000 observations were made on more than 2,300 diamonds using observers from all sectors of the jewelry industry. This included diamond cutters, dealers, retailers, as well as potential customers. GIA researchers knew that diamonds can be cut in such a way so that their weight would end up as being over one carat, yet it could include compromises which make the light reflect down rather than at the beholder’s eye. This would obviously not serve the customer well.
GIA researchers determined that if a diamond didn’t look brilliant, the customer would be getting an inferior product. This is why the GIA cut grading system is something which is a good idea to pay attention to. It is about how nice the diamond looks.

This doesn’t mean that reports from other labs can’t do the same job. AGS Labs actually has a very ingenious way of describing information about the stone’s brilliance: An AGS Labs Computer Generated Light Performance Map.

0.91 Carat H-VS1 Ideal Cut Round Diamond

There are a couple things which I am very excited about in regards to this stone in particular. Stones under 1 carat have a significantly lower price per unit of weight than stones over one carat. However this benefit is counter balanced by having a Grading Report is less detailed. GIA does not issue a Grading Report for stones under 1 ct, but rather a simpler report called a Diamond Dossier. This simplified document does not include a diagram of where the inclusions are on the diamond.  Usually this compromise is accepted since the price difference can be anywhere from $1800 to $3000.

However, and here’s the good part, this stone has an AGS Labs report which has got all the information needed, and more. It has a diagram plotting the (very small) inclusion. But what I particularly like is that AGS Labs reports now have a bonus section too: The AGS Labs Computer Generated Light Performance Map. That’s the red, green and blue disk on the report. I know that it probably looks like what you’d see when looking through a kaleidoscope, but let me tell you that this diamond has got the goods! It certainly does.

Now, about the size. This one measures 6.15 mm across. The size difference between this 0.91 ct diamond and a 1 ct diamond which is also cut to Ideal standard is 0.35mm. Yes, one third of a millimeter. I am pretty sure no one can tell the difference. Even someone who has been handling diamonds for years! It really is virtually impossible to tell the difference. So why does everyone want a 1 ct diamond? It’s just a nice round number. Obviously plenty of people think it’s absolutely worth it to spend an extra $2000 for one third of a millimeter on a diamond. But once you know these little tips and tricks it might seem more worth it to get one just below 1 ct.

Shape:  Round
Carat weight:  0.91
Cut:  Ideal
Color:  H
Clarity:  VS1
Certificate:  AGS
 Price: $6090
Depth:  62.4%
Table:  56.5%
Polish:  Ideal
Symmetry:  Ideal
Girdle:  Thin to slightly thick
Culet:  Pointed
Fluorescence:  Negligible
Measurements:  6.15*6.19*3.85
Crown Angle: 35.4
Crown %:
Pavilion Angle: 40.7
Pavilion %: