Mans ring

[dyemonds2002]

I bought a mans channel set 1/2 ct 10 diamond ring off of ebay question is the little 5pt stones are table clean and clear with a loupe but there are dark spots in each stone and some pepper spots what gets me is theses stones are clean and clear not milky or even cloudy at all the put out very nice dispersion my question is what kind of inclusions are theses spots are they graphite or carbon experts please

 

[valeria101]

Not sure what to say...

Graphite is carbon crystalized otherwise than diamonds which are carbon too, of course. Now, if the question is about how are carbon inclusions in diamonds crystalized, I don''t know that off the bat.

Not all black inclusions in diamonds are carbon (link to article in the Pricescope Journal) and there are graphite inclusions in diamonds allright. I don''t think you could tell inclusions apart without a microscope. Graphite inclusions are mostly sheet-like, or small compressed flakes. Amorphous carbon can be found too. However, as far as I know, other types of minerals are most often responsible for the black looking inclusions in diamonds (e.g. other diamonds, olivine, garnet, diopside, pyrrhotite, pentlandite, pyrite, ilmenite, rutile, silica, bronzite, spinel, serpentine, biotite, phlogopite, chlorite, calcite, haematite, goethite, and iron oxides... and I am not quite sure this is the complete list). Since many are tiny, even if some color is present (diopside and garnet come in the usual colors, not black) it is difficult to detect in a tiny spec. Larger crystal inclusions of colored minerals are rather cool to look at - well, for some folk at least.