- Diamond -

 

What does "diamond" mean ? 

The word "diamond" came from a Greek word "andamas" means "unconquerable" which reflects diamonds' exceptional hardness.


 

What is diamond and how are diamonds formed?

Diamond is a mineral that is a crystalline form of carbon.  Diamonds are formed between 90-120 miles (140 - 190 kilometers) underneath earth surface under extremely high temperature (900C-  1300C) and pressure conditions.   Until the condition is right, which may take millions or even billions of years, diamonds are carried up via violent eruptions and blasts underneath the earth.   


What make diamond so special? 

  • Hardest:  Diamond is "the hardest natural substance", therefore extremely resistant to scratches and abrasions. 

  • Brightest: Diamond has superior potential to reflect light than any other gemstone.  

  • Fire:  Fire is rainbow color effect when light hits a diamond. Comparing to other gemstones, diamond has high capacity to create strong and impressive fire.    


What do rough diamonds look like? 

Photo courtesy of Gemological Institute of America (GIA)

Photo courtesy of Gemological Institute of America (GIA)

Rough diamonds [i.e. diamonds that have not been cut or polished] are found in different shapes.  

However,"octahedron" is the most common shape for

gem quality rough diamonds. 

 
Photo courtesy of Gemological Institute of America (GIA)

Photo courtesy of Gemological Institute of America (GIA)