A List of Stones and Their Treatments

Most gemstone material – both cut stones and rough, is enhanced. For some gemstones, the enhancements have relatively no effect on value, are permanent, undetectable to the human eye and often difficult to see under a microscope as well.
Enhancements increase the available supply of gemstones, thereby increasing their affordability Read more

A Few Gems About Diamonds

Most diamonds are found in kimberlite – a hard volcanic rock. They were created under huge pressure up to 120 miles underground more than a billion years ago and are carbon minerals turned into the hardest naturally occurring substance.

The biggest diamond ever found was a 3,106.75-carat (621.35g) ‘Cullinan’ mined Read more