Sorry but we do not understand your question???
The term 'genuine, clean diamond' implies a generalist's description of what a gemologist would term 'natural, acceptably flawed diamond'. The term 'regular diamond' is as descriptive as 'regular human'. Any diamond is worth what someone will pay you for it.
A clean diamond is a diamond that has not come from countries that fund violent civil conflicts in many African countries. You may have heard of a "blood diamond"
Half carat is the term used to measure the weight of the real diamond. A diamond's weight does not define or detract from the fact that the diamond is or is not a real diamond.
'Clean diamond' is a term used by a non-gemologist to express an opinion about the lack of visible flaws in a diamond.
You clean a man made diamond the same way that you would clean any other diamond. Chemically speaking there is absolutely no difference between a diamond that is made by a man made process and a diamond that was made by a geologic process.
You can take your diamond to a local jeweler who can use a probe to help you figure out if the diamond is a real diamond.
I think you are asking if a natural clean diamond is worth as much as a natural diamond that is Not considered clean? The answer is no. A clean diamond means that it is clear from imperfections. Now this can mean clear to the naked eye, or clear under a microscope. Of course the diamond that is clear under the microscope is much worth more than a diamond that is only clear to the naked eye.
a real diamond can scratch glass and if the diamond gets scratched it's fake
No, a simulant diamond is not a real diamond. It is a material that mimics the appearance of a diamond but is not made of the same physical and chemical properties as a natural diamond.
Take your black diamond to a jeweler and ask the jeweler to use the probe to verify that the diamond is a real diamond.
Yes.
Yes.