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G&G eBrief Brainteser
https://www.gemologyonline.com/Forum/phpBB2/viewtopic.php?f=19&t=14507
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Author:  roshanravan [ Tue Sep 06, 2011 6:09 am ]
Post subject:  Re: G&G eBrief Brainteser

ok here is the answer: its hydrogen clouds in flower-shaped with six symmetrical petals
The crystallographic relationship of the flower-shaped cloud to the orientation of the octahedral form makes this diamond unique. The cutter capitalized on this striking natural
form.

there are many amazing hydrogen patters seen in diamonds, like butterfly, mask shapes and...

Author:  Kerensky [ Tue Sep 06, 2011 7:38 am ]
Post subject:  Re: G&G eBrief Brainteser

Thanks :D I'll remember that.

Author:  roshanravan [ Tue Sep 06, 2011 8:33 am ]
Post subject:  Re: G&G eBrief Brainteser

here is DiamondView images of butterfly hydrogen cloud in two identical black diamonds this hydrogen cloud is cause of black color in the diamond.
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this hydrogen cloud has a unique three-dimensional shape reminiscent of a Venetian
party mask.
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Author:  Kerensky [ Tue Sep 06, 2011 8:45 am ]
Post subject:  Re: G&G eBrief Brainteser

Thanks again. Those are pretty. Why does the hydrogen appear dark? Is it minute gas bubbles or free ions in the lattice?

Author:  roshanravan [ Tue Sep 06, 2011 9:13 am ]
Post subject:  Re: G&G eBrief Brainteser

regarding those black diamonds,
unlike common natural black diamonds which the black appearance is cause by Black graphite inclusions in these diamonds After nitrogen, hydrogen was the most abundant impurity. The dense hydrogen clouds are responsible for the natural black color.

This diamond has an X-shaped hydrogen cloud in its center, with symmetrical etch channels on all four sides of the cloud.
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aslo check this topic viewtopic.php?f=20&t=14075&start=15 , i've posted some diamond slices with cubic hydrogen cloud patterns.

Author:  Kerensky [ Tue Sep 06, 2011 10:36 am ]
Post subject:  Re: G&G eBrief Brainteser

And thanks again.... Each day brings something new (I'm glad to say).

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