What is a Needle in regard to inclusions

[mandyk77]

I was wondering what the effect of a Needle (as listed on GIA reports) has on a diamond. Does it hinder light return?

I am looking at a stone that has a couple of small needles and feel a little confused.

 

[JohnQuixote]

Crystals are very common inclusions and a needl is a thin, enlongated crystal that can look like a tiny rod. It's not a problem. With strictly graded diamonds SI and above inclusions will not hinder light return (unless the inclusion is a rare "grade setting" cloud in SI2 or - very rarely - SI1).

 

[Garry H (Cut Nut)]

Date: 1/23/2008 6:29:52 PM
Author: JohnQuixote
Crystals are very common inclusions and a needl is a thin, enlongated crystal that can look like a tiny rod. It''s not a problem. With strictly graded diamonds SI and above inclusions will not hinder light return (unless the inclusion is a rare ''grade setting'' cloud in SI2 or - very rarely - SI1).

Dear student of Gemology, can a needle be a cloud? And BTW, I have yet to see a cloud of needles (I pass out at the sight of a single needle)

 

[zhuzhu]

Date: 1/23/2008 8:37:43 PM
Author: Garry H (Cut Nut)

Date: 1/23/2008 6:29:52 PM

Author: JohnQuixote

Crystals are very common inclusions and a needl is a thin, enlongated crystal that can look like a tiny rod. It''s not a problem. With strictly graded diamonds SI and above inclusions will not hinder light return (unless the inclusion is a rare ''grade setting'' cloud in SI2 or - very rarely - SI1).

Dear student of Gemology, can a needle be a cloud? And BTW, I have yet to see a cloud of needles (I pass out at the sight of a single needle)

Meow meow.... my cats agreed....

 

[JohnQuixote]

Date: 1/23/2008 8:37:43 PM
Author: Garry H (Cut Nut)

Date: 1/23/2008 6:29:52 PM
Author: JohnQuixote
Crystals are very common inclusions and a needl is a thin, enlongated crystal that can look like a tiny rod. It''s not a problem. With strictly graded diamonds SI and above inclusions will not hinder light return (unless the inclusion is a rare ''grade setting'' cloud in SI2 or - very rarely - SI1).

Dear student of Gemology, can a needle be a cloud? And BTW, I have yet to see a cloud of needles (I pass out at the sight of a single needle)

The statements were not intended to be related Garry. I was trying to let our supplicant know (a) small needles should not hinder light return...and furthermore (b) if he is sticking with SI+ grades he need not ask if other inclusions (feathers, crystals, etc) would hinder light return.

As to your query: Since clouds = very tiny pinpoints and pinpoints = very tiny crystals, a myriad of very tiny needle-like pinpoints could indeed a cloud make. But then they would not be plotted as needles and I did not want to overanswer for fear of creating fear.

As for you passing out, are you sure you''re not mistaking the shape of empty wine bottles for needles?

 

[Garry H (Cut Nut)]

Date: 1/23/2008 10:12:30 PM
Author: JohnQuixote

Date: 1/23/2008 8:37:43 PM
Author: Garry H (Cut Nut)

Date: 1/23/2008 6:29:52 PM
Author: JohnQuixote
Crystals are very common inclusions and a needl is a thin, enlongated crystal that can look like a tiny rod. It''s not a problem. With strictly graded diamonds SI and above inclusions will not hinder light return (unless the inclusion is a rare ''grade setting'' cloud in SI2 or - very rarely - SI1).

Dear student of Gemology, can a needle be a cloud? And BTW, I have yet to see a cloud of needles (I pass out at the sight of a single needle)

The statements were not intended to be related Garry. I was trying to let our supplicant know (a) small needles should not hinder light return...and furthermore (b) if he is sticking with SI+ grades he need not ask if other inclusions (feathers, crystals, etc) would hinder light return.

As to your query: Since clouds = very tiny pinpoints and pinpoints = very tiny crystals, a myriad of very tiny needle-like pinpoints could indeed a cloud make. But then they would not be plotted as needles and I did not want to overanswer for fear of creating fear.

As for you passing out, are you sure you''re not mistaking the shape of empty wine bottles for needles?

Ha ha
Actually it is front of mind!
In 2 hours I will be at the dr. having a quaterzone (sp?) injection in the shoulder
I am already feeling weak in the knees

I am sure a cloud of needles is possible, like rutilated quartz, but i have never seen one - it could be a clooectors stone

http://images.google.com.au/images?q=rutile+rutilated+quartz&ndsp=20&svnum=10&hl=en&rls=GGLL,GGLL:2007-51,GGLL:en&start=60&sa=N

 

[JohnQuixote]

Date: 1/23/2008 10:34:56 PM
Author: Garry H (Cut Nut)

Date: 1/23/2008 10:12:30 PM
Author: JohnQuixote

Date: 1/23/2008 8:37:43 PM
Author: Garry H (Cut Nut)

Date: 1/23/2008 6:29:52 PM
Author: JohnQuixote
Crystals are very common inclusions and a needl is a thin, enlongated crystal that can look like a tiny rod. It's not a problem. With strictly graded diamonds SI and above inclusions will not hinder light return (unless the inclusion is a rare 'grade setting' cloud in SI2 or - very rarely - SI1).

Dear student of Gemology, can a needle be a cloud? And BTW, I have yet to see a cloud of needles (I pass out at the sight of a single needle)

The statements were not intended to be related Garry. I was trying to let our supplicant know (a) small needles should not hinder light return...and furthermore (b) if he is sticking with SI+ grades he need not ask if other inclusions (feathers, crystals, etc) would hinder light return.

As to your query: Since clouds = very tiny pinpoints and pinpoints = very tiny crystals, a myriad of very tiny needle-like pinpoints could indeed a cloud make. But then they would not be plotted as needles and I did not want to overanswer for fear of creating fear.

As for you passing out, are you sure you're not mistaking the shape of empty wine bottles for needles?

Ha ha
Actually it is front of mind!
In 2 hours I will be at the dr. having a quaterzone (sp?) injection in the shoulder
I am already feeling weak in the knees

I am sure a cloud of needles is possible, like rutilated quartz, but i have never seen one - it could be a clooectors stone

http://images.google.com.au/images?q=rutile+rutilated+quartz&ndsp=20&svnum=10&hl=en&rls=GGLL,GGLL:2007-51,GGLL:en&start=60&sa=N

If you're getting a cortisone injection tell the Sydney Olympic committee first.

It's a steroid and they might take your medals away.

And if you don't like needles...be sure the doc doesn't see you in this waiting room!

Good luck.

 

[mandyk77]

Thanks so much Gary and John!

You are so helpful!!!!!