3 day Quizz - What is this about?

[Garry H (Cut Nut)]

Date: 3/10/2005 1:49:22 AM
Author: websailor
If I were to ask for a clue, it would be this - What is this objects Mohs scale of hardness?

I think that would tell me an awful lot about it, and it would probably eliminate quite a few possibilities.

WebSailor you win the right to an answer for stage 1 for your question

Its hardness varies between 2 and 3 on the Mohs'' scale on the surface
Scrath the surface and the Mohs hardness is 10

 

[pyramid]

Are they that black coated ekati diamonds from Canada?


which Garry spoke about here

https://www.pricescope.com/community/threads/diamond-weight-lost-during-the-cutting-process.26188/=

 

[The Joker]

What process burnt the diamonds???

Joker....

 

[Garry H (Cut Nut)]

Date: 3/10/2005 10:28:19 AM
Author: The Joker
What process burnt the diamonds???

Joker....

There was only really one question today - and it was a great question Joker.

A laser burnt the diamonds

 

[websailor]

Okay, I''m just kidding around here - So it''s part of Reagan''s Star Wars experiments that didn''t quite pan out.....

 

[pyramid]

Oh

so they are not Ekati diamonds from Canada.

 

[valeria101]

Date: 3/11/2005 1:5:25 AM
Author: Garry H (Cut Nut)

A laser burnt the diamonds

Oh.. so they were laser cut no ?


These are not black diamonds after all !

You are shwing how the ideal darlings get through the production line

 

[Garry H (Cut Nut)]

yeah Ana

You hit the nail on the head!

Laser sawing is the term that is used - but in fact ithe correct term is laser burning

. Heat plus oxygen makes CO2 out of the diamond.

This is rather new technology.
Laser sawing has been around for a couple of decades - and laser ''bruting'' is a more recent invention - the outline of a fancy shape is formed without the risk of damaging the points on marquise etc.

This is the first time I have seen the whole diamond preformed.

Dont worry though folks - the burnt bit is just a thin skin

 

[valeria101]

The weird hardness descriptions gave the Q away: it reminded laser cuting.

Those stones not very small ! Is this anywhere close to a mass production process, or special treatment for deals ?

 

[cflutist]

Thanks Garry! This was very interesting and had me looking at some unusual web sites about diamonds.... A great way to learn more about our favorite subject - diamonds!!!!


edited - Oooopps, forgot to log cflutist out...this is really websailor!

 

[Garry H (Cut Nut)]

Glad you got something out of it.

"Oooopps, forgot to log cflutist out...this is really websailor! "

The technology is expensive and still a bit experimental I think. But it adds a new level of precision and takes away some operator skill.

I think most stones that have smalll etch marks and cavities will still be bruted the traditional way, where the craftsman adds her finishing touch.

 

[The Joker]

Interesting information:

How does this laser burning compare to diamond sawing?
How long does it take?
I know it takes a long time to saw a diamond, but there is very little waste in the sawing process.

Joker....

 

[Garry H (Cut Nut)]

Less time in the actual process - but one operator can work many blade saw's at once.

But the laser saw can cut any direction - it does not depend on soft / hard directions.

But the laser must cut a narrow Vee shape - so there is more loss as the stone gets bigger - so say 5 - 10ct rough is more likely to be sawn on a traditional saw.

 

[lmurden]

I''ve got it!!!
A rotten crusty finger!