Diamond clarity is graded by systematic examination of the pavilion, girdle, and crown, in that order, section by section, using the wedge technique under the microscope.Firstly, you are looking at it upside-down. Diamond clarity is graded face-up at 10x magnification. Most of that stuff looks like specks of dust or dirt on the surface, as well as a little hair/fiber. It's the really straight thing that may be a needle inclusion or a polishing snafu. But, again, if it's not visible from face-up at 10x magnification, it has no impact on the clarity grading.
Diamond clarity is graded by systematic examination of the pavilion, girdle, and crown, in that order, section by section, using the wedge technique under the microscope.
GIA and AGS use a forest-first, trees-next approach using the buzzwords "obvious, noticeable, minor and minute."From GIA: “In determining a clarity grade, the GIA system considers the size, nature, position, color or relief, and quantity of clarity characteristics visible under 10× magnification.”
While they are looked at under a microscope to plot inclusions, that’s not how grades are assessed, from everything I have ever read.
From GIA: “In determining a clarity grade, the GIA system considers the size, nature, position, color or relief, and quantity of clarity characteristics visible under 10× magnification.”
While they are looked at under a microscope to plot inclusions, that’s not how grades are assessed, from everything I have ever read. And yes, girdle, crown, and table are “face up.” OP’s stone shows what looks like an exterior blemish on the pavilion, which, depending on how it is from face-up, may be perfectly consistent with an IF.
My comment to you was based only on what I was taught at the Diamond Grading Lab in Carlsbad where I completed Diamonds Graduate. (Along with the entire process as @John Pollard spelled it out below.) I apologize to you @distracts if I came across abruptly, that was not my intention.
I did. They showed the results but I worried if the inscription can be fake
Do you have the plot. IF means Internally Flawless no inclusions seen under 10x by an experienced grader. However, it may have surface blemishes.
Is that why there is another grade above that? Flawless or FL isn't it? So those are the stones that are indeed totally flawless? Sorry - I always did wonder about this.
Counterfeit documents backed by fake girdle inscriptions are crazy unusual but it is possible. If you're worried about this, start with a qualified and independent appraiser. You probably need one anyway and you might learn more than you expect about your stone, the piece, or both. Ask your questions. What I see in the picture looks like dirt and debris on the stone but clarity grading from a photo is a bad idea.