David, I was wondering if there is any more available info about the 1.86 ct radiant that's G/I3 that I saw on the new items list.  It sure is a bargain price and I just wonder what the I3 inclusions look like in it.  I know you don't pick any dogs, so I'm hopeful you'll tell me it looks fabulous in person!!

Hi Everone!
Thanks for the heads up WM!

Good question , Blameitoneblue

Let's talk about very inexpensive diamonds.
In fact, $2595 is a really low price for a 1.86 diamond.
The most expensive colorless 1.86 diamond would be over $30k.

A high quality- say G/VS2- would cost anywhere from about $16k and up...

I bring up these points, to show how inexpensive $2500 is, for a 1.86carat diamond .

looking at the stone from behind, I can actually tell how well it is cut- I can see it's not too deep. I can see the shape- nicely defined corners.


I can also see the huge white booger - and some other white stuff- down around 5:00.


Flip the diamond over, and you can see why it's the price it is.

The small booger gets blown up- it's on the top right corner in this orientation



Sometimes a booger can be almost invisible- or, in cases like this- the diamond acts like a magnifying glass- causing the relatively small imperfection to look huge.
If we were to use percentages...
Let's say a VVS1's imperfection blocks .0000000001% of a diamonds light.
An SI2 might be .00000025% in the case of an eye clean Si2.
But let's say 1%- in the case of a bad SI2.
One percent of a visual inspection might be visible- although not noticeable.
If I were to assign a number, I'd say the imperfections obscure about 15% of the light coming back out the diamond. An entire corner.


Now, in it's defense- it's a very nice color, and an very nice cut. It looks big, and it's flashy.
If anyone did want to buy it, we'd just want to make sure they understood that the imperfection is easily visible.



You can see how one corner is opaque.



ITEM #: R1772
Radiant Cut Diamond, Loose

  WEIGHT: 1.86ct
  SHAPE: Radiant Cut
  COLOR: G
  CLARITY: I3
  MEASUREMENTS: 8.20 x 7.10 x 3.80 mm
  TOTAL DEPTH: 53.5%

Yes, I found that highly educational also, thanks so much David!!  I too am wondering what exactly the white stuff is?  Very, very interesting!  Yes, I see very well the opacity of that corner--interesting how the diamond just magnifies that!!  It might be nice for a pendant or something along that line. 

Hmmm, I think this is tutorial material.

Another good question!!

This is one of the many reason why I like to come here! Great information! Thank you!