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Quizz : where is(are) the inclusion(s) and how would you grade the clarity of that stone ?

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trichrome

Shiny_Rock
Joined
Dec 9, 2002
Messages
397
under 25x magnification
this stone shows a pretty good H&Arrows pattern...even if it''s not
an H&A.......

Good luck

Trichrome.

centra~3.jpg
 

Colored Gemstone Nut

Ideal_Rock
Trade
Joined
Nov 21, 2002
Messages
2,324
Hey Tichrome:
Taking into consideration that the stone has been cleaned thouroughly I seem to spot an inclusion at the top left around 11
0 around the edge along with a faint feather around the center of the table. Also vaious pinpoint inclusions throughout the left side of the stone. I would guess under this kind of magnification si1-si2?

Cool Quiz
Josh Rioux
Sitka, Alaska
 

trichrome

Shiny_Rock
Joined
Dec 9, 2002
Messages
397
Your first assumption was not right lol

The stone was not that clean....

What you see in the bottom left is just minute particles of dust on the surface....

now for the other 2 inclusions (the one at 11oclock) and the feather in the center...
hmmm.....let's wait for more answers before I give the answer.


Trichrome.
 

Lugus

Shiny_Rock
Joined
Jan 17, 2003
Messages
213
Feather in the center, and crystal at 11 o'clock? Who graded it and what size is the diamond? Off hand I'd guess SI1 give or take a grade.
 

justme

Shiny_Rock
Joined
Dec 5, 2002
Messages
184
Being the non-expert that I am - but an expert puzzle solver, I take a broad stroke guess. Gosh I love quizzes!

All in the outer crown area of the stone:

something at approx. 1 O'clock

A longer line at approx. 4 O'clock (reaching back toward table 3:30)

Another line something at 5 O'Clock

something again at about 5:30 (possibly a couple of somethings)

something at about 9:30 and 11:30

In the table area:

Alot of somethings from 7-O'Clock

An Vs2 for clarity is the grade as this is 25x mag.

But if I'm ALL wrong I want to state that everyone knows you shouldn't grade a diamond that is set!!


Justme

edited to cleanup the [email protected]% smiles at the O'Clock's
 

trichrome

Shiny_Rock
Joined
Dec 9, 2002
Messages
397
I'll give the answer tomorrow...

I agree that it is not easy...

A clue : there's nothing (no inclusions) outside the table area.... all what you see over
there is only dust..

So..... in the table area.... is there something ????? hmmmmm.....
and if there is something, will it make the stone an SI, VS1, VS2 or IF ????.

Let"s see tomorrow.

Trichrome.

BTW : Lights used for this picture are very special.... It's a combination of
ambient winter light, focal white light and neon light....
 

Lugus

Shiny_Rock
Joined
Jan 17, 2003
Messages
213
----------------
On 3/8/2003 7:50
5 PM trichrome wrote:

and if there is something, will it make the stone an SI, VS1, VS2 or IF ????.

----------------
Well, I know it does't make it IF
 

Rank Amateur

Brilliant_Rock
Joined
Feb 26, 2003
Messages
1,553
I'd say pretty darn difficult to find under 10x.

Let's go with VVS2.

R/A

p.s. No fair posting a stone that's dirty as hell. Looks like you dropped it in the sandbox!
 

trichrome

Shiny_Rock
Joined
Dec 9, 2002
Messages
397
I was at work so I had not a lot of things under my hand to clean the stone.

So here is the answer.

The thing that is a little bit red at 11oclock close to the edge of the table is simply
an artefact.

In this stone, there's only one inclusion located at 11oclock very close to the center of the
table area. It's like an inverted smile... medium length but very thin... difficult to
find under 10x... it's not a feather, more like a cloud.... and it was graded VS1
by GIA. I agree with this even if the inclusion is right in the center of the stone but it's
very small so that's why it's a VS1 and not a VS2.

Happy grading to all of you!!!!

Trichrome.
 

Lugus

Shiny_Rock
Joined
Jan 17, 2003
Messages
213
This was actually pretty fun. How about some more where you don't give us a dirty picture :razz:

And what's an artefact in diamond grading terms?
 

trichrome

Shiny_Rock
Joined
Dec 9, 2002
Messages
397
I agree that the stone was dirty!!!!

An artefact is just something you see in a picture or an Xray for
example that is not really there... it is cause by some unusual light
or superposition of objects...

Why not continue this sort of quizz with better pics!

Trichrome.
 

Lugus

Shiny_Rock
Joined
Jan 17, 2003
Messages
213

----------------
On 3/10/2003 9:37:53 AM trichrome wrote:

Why not continue this sort of quizz with better pics!

Trichrome.----------------

I dont' know why not Tri. Don't you have diamonds that are cleaner :razz:

 
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