Why does a round diamond have different length and width?

[purrfectpear]

I''m a hands on kind of learner. Could you please forward a big sample or two so I can make sure I get this

 

[John P]

Date: 8/5/2008 3:48:52 AM
Author: Lorelei

Most welcome Sir, it is wonderful for us to be able to see these pics and get a peek into the world where the magic happens!!

Cool. It was fun for me to get a peek back at what my blackberry looked like when it was new!

 

[Lorelei]

Date: 8/5/2008 2:36:20 PM
Author: John Pollard

Date: 8/5/2008 3:48:52 AM
Author: Lorelei

Most welcome Sir, it is wonderful for us to be able to see these pics and get a peek into the world where the magic happens!!

Cool. It was fun for me to get a peek back at what my blackberry looked like when it was new!

LOL!!

 

[John P]

Date: 8/5/2008 12:43:53 PM
Author: HariSeldon

Date: 8/5/2008 1:49:20 AM
Author: John Pollard

...On the Moh's hardness scale iron is 4 to 5. Quartz is 7 and even hardened steel is only 7 to 8. Diamond is the hardest substance in the known universe. at 10 on the Moh's hardness scale it's actually many times harder than corundum, which comes in at 9.

Click here for a visual representation: http://www.allaboutgemstones.com/images/mohs_hardness_scale.jpg

Just FYI , a diamond isn't the hardest substance in the universe anymore. Aggregated carbon nanorods have been synthesized that are harder and more dense than diamonds.

Ah yes. Diamonds are the hardest naturally occuring substance... ADNRs were developed using HPHT processes similar to MMD production a few years ago. Diamond nanorods are something like a half-percent denser than natural diamonds. You'll chip your tooth on either one I think.

 

[John P]

Date: 8/5/2008 1:08:50 PM
Author: purrfectpear
I''m a hands on kind of learner. Could you please forward a big sample or two so I can make sure I get this

Clever. Bold. I give this reply a 10.

 

[strmrdr]

Date: 8/5/2008 2:45:00 PM
Author: John Pollard

Ah yes. Diamonds are the hardest naturally occuring substance... ADNRs were developed using HPHT processes similar to MMD production a few years ago. Diamond nanorods are something like a half-percent denser than natural diamonds. You''ll chip your tooth on either one I think.

Chuck Norris used to polish diamonds on his beard he now just looks at them hard and they split into perfectly formed RB''s

 

[John P]

Date: 8/5/2008 2:51:08 PM
Author: strmrdr

Chuck Norris used to polish diamonds on his beard he now just looks at them hard and they split into perfectly formed RB's

I hear Chuck breathes warm air on them and they change from tinted to colorless.

 

[Lynn B]

I, too, just LOVE threads like this!

Thanks, John!!!