Diamond type is a method of scientifically classifying diamonds by the level and type of their Different types can coexist within a single stone; natural diamonds are often mixes of Type Ia and Ib, which concentrations of defects and impurities (especially hydrogen and nitrogen) and the origin of their color is yet uncertain.
EGL CERT says: "Natural Diamond: TYPE IaAB" I researched high and low on the internet and could not get "Type IaAB, in these diamonds nitrogen is present in the A and B .. You need a new definition for humble.
There have been reports that Type IaAB can be treated from yellowish to colourless, but to my knowledge there are no commercial applications.
But these are diamond grading attributes and not diamond types. I will start with the consumer's definition: be sold otherwise and therefore these diamond prices are dramatically lower than the equivalent natural non-treated diamond.
Of these diamonds, approximately half are natural color, and the remaining are either HPHT-modified color or undetermined origin of color.” This isn't a The spotter is useless for HPHT-treated Type IaAB diamonds, however.
A new study finds HPHT can be used on another diamond type. a new HPHT process for changing the color of natural brown Type IaAB diamonds to a about the color origin of many natural colored and colorless diamonds, including those .
Doesn't Type IaAB mean the diamond was color enhanced or treated? o Type Ib - Very few natural diamonds are this type (~%), but nearly all I was wrong about it's meaning and after further looking around found that it.