Why would these fcd's have a hazy look like this?

[beaujolais]

Why would these fcd's have a hazy look like this in their photos?

Is it the photography or the stone, probably ?

This item has ended so scroll down a bit on the page for the photos:
http://www.ebay.com/itm/160830198070?ssPageName=STRK:MEWAX:IT&_trksid=p3984.m1423.l2649

Another:

http://www.ebay.com/itm/VS3-1-20-Ct...=356763187102712463&pid=100011&prg=1005&rk=1&

Another:

http://www.ebay.com/itm/0-72-Cts-Na...3247079?pt=Loose_Diamonds&hash=item2572689767

Another

http://www.ebay.com/itm/VS3-2-27-Ct...2830452?pt=Loose_Diamonds&hash=item231991a3f4

I do not mean anything against these sellers. They do have some lovely items on their sites.

Thanks & Happy 4th,
sonoma

 

[T L]

Diamonds, like other gems, can be sleepy and I forget what these inclusions are called, but they can and do sometimes affect clarity. I have noticed that greyish green diamonds tend to be sleepy, as well as other grey diamonds, but not all.

Here's another one, but I like the luster which looks metallic.

http://www.fancydiamonds.net/view_diamonds/8858.htm

 

[beaujolais]

Thanks TL.

If anyone knows what material causes the sleepiness, please do tell.

I like sleepiness/silk in some colored stones but I don't think it would work in a fcd. Agree or disagree?

 

[T L]

Thanks TL.

If anyone knows what material causes the sleepiness, please do tell.

I like sleepiness/silk in some colored stones but I don't think it would work in a fcd. Agree or disagree?

I don't mind as long as the sleepiness isn't too much. I actually am a fan of greyish green diamonds, and I own several, and some have sleepiness and others do not. However, I wouldn't say that the sleepy ones I own are overly sleepy, but what I do like is the metallic luster, and they really have amazing dispersion against their darker grey backgrounds. It's hard to explain unless you see it in person.

I wouldn't really want an overly sleepy diamond though, in any color. The inclusions do help keep the cost down as well, and in greyish greens, they're not as distracting as they would be in lighter tones. JMO. HTH. :-

ETA: I learned on another site that these inclusions are called "clouds" and are made up of microscopic tiny pin point crystals. Someone can correct me if I'm wrong, but that's what I read, although I'm not sure how correct that information is.

 

[beaujolais]

Thanks so much, again.

 

[VapidLapid]

Diamonds can turn milky by being heated in an oxidizing environment such as when being set in wax and cast in place. They can even vaporize in such circumstances as a house fire or heating them in a bell jar with oxygen, leaving only carbon dioxide gas.

http://www.meevis.com/jewelry-making-class-cooking-broken-diamond.htm

http://shorinternational.com/CastStoneInWax.php

http://books.google.com/books?id=dCLOAAAAMAAJ&pg=RA1-PA161&lpg=RA1-PA161&dq=heating+diamonds+milky&source=bl&ots=bSxAK54W8K&sig=qvHtEuCNTvhZtk9AauZiLoKsh9g&hl=en&sa=X&ei=vVL0T8GPEqrd6wHd3bjrBg&ved=0CFMQ6AEwBQ#v=onepage&q=heating%20diamonds%20milky&f=false

 

[VapidLapid]

Sorry in advance for the threadjack, but this is a good place to share Faraday's account of his travel to Florence With SIr Davy and the experiments demonstrated there.

 

[VapidLapid]

 

[T L]

I didn't read all the pages Vapid uploaded (they were too small for my monitor, sorry!), but these greyish diamonds aren't cloudy due to fluorescence. While fluor can make a diamond appear milky or cloudy in UV light, the type of cloudiness I've experienced with greyish diamonds is due to inclusions.

Here's a cool page full of various hues of diamonds with grey, and you can see how many of them are cloudy, and some overly so. I never bought anything from this vendor, so I'm just posting this page for visual purposes only.

http://www.langerman-diamonds.com/shop/catalog/all/Gray_Diamonds

 

[LD]

I'm pretty sure that the haziness is not caused by inclusions. It's simply a poorer grade diamond. Some are clear when cut from the rough, others aren't. I think earth's natural radiation also plays a part in this.