Irradiation & HPHT Process Such uneven or zoned coloration is caused by the irradiation process and is most often seen as a band of dark blue, green or yellow color that parallels the outer faceted shape of a diamond or a band of color that forms a star-shaped pattern around the pointed culet of a diamond.
How do you irradiate diamonds?
Presently diamonds are safely irradiated in four ways: Proton and deuteron bombardment via cyclotrons; gamma ray bombardment via exposure to cobalt-60; neutron bombardment via the piles of nuclear reactors; and electron bombardment via van de Graaff generators.
How do you tell if a diamond is treated?
Because there is no way to see if a diamond has been treated, it is important to have a diamond grading report from an independent lab like GIA. As part of its grading process, GIA tests all diamonds for treatments; if the diamond is treated, it will be disclosed on the certificate.
What can diamond treatments alter?
Diamond treatment usually involves improving the total quality of the diamond by modifying the inclusions and/or enhancing or changing the colour. Some treatments are stable and permanent while others may not be that stable and can suffer damage during setting, wear, cleaning and repair.
Are treated diamonds worth anything?
The biggest advantage to buying clarity-enhanced diamonds is their price. A stone that has been treated to improve clarity can cost 20-30% less than an untreated diamond of the same clarity grade.
Does GIA certify enhanced diamonds?
Futhermore, GIA doesn't currently certify clarity enhanced diamonds. EGL certifies these diamonds along with additonal labratories.
Are Clarity Enhanced Diamonds good?
When these stones are polished, little attention is paid to achieving better cut quality because it doesn't make economic sense to do so. The truth of the matter is that 99.99% of clarity enhanced diamonds are absolutely terrible in terms of cut standards.
Are enhanced blue diamonds valuable?
Overview. Enhanced blue diamonds are natural diamonds that have undergone color enhancement treatments. Untreated, natural blue diamonds can be found, but they are extremely rare. This scarcity makes them one of the most sought-after and expensive gemstones available today.
Why do my diamonds look cloudy?
A cloudy diamond has inclusions that make it appear hazy in some parts or all of the diamond. For instance, multiple smaller inclusions clustered together can cause the diamond to look foggy or dull. It's not solely cloud inclusions—those made up of three or more crystal inclusions—that can make a diamond appear hazy.
Can a jeweler tell the difference between a lab created diamonds and real diamonds?
The short answer: Yes, because they are real diamonds. Lab-crafted and natural diamonds cannot be differentiated with the naked eye. You can't tell the difference between lab-created diamonds and real diamonds without specialized equipment, even if you're a professional gemologist!
