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Beyond the 4 C's

POLISH

Polish is an element of diamond finish and the smoothness of its outside surface.

Why is polish important?

Diamond color can be detected by the eye, even though the differences are very subtle. Color grades are assigned based on the lack of visible color shading, with the higher color grades (less color) being more rare and valuable. The diamond color grading scale ranges from D – Z.


Color is often considered the second most important C because it can be eye-visible. While color may not be immediately identifiable, your eyes will notice a difference upon comparing diamonds in two color ranges.




WHICH COLOR IS FOR ME?

Low polish grades such as Fair or Poor can affect the diamond’s sparkle and ability to absorb and reflect light. High grades, such as Excellent, Very Good, and Good, can bring out the reflective beauty of a diamond.




Which polish is for me?

Excellent polish diamonds carry a premium while Very Good and Good grades can be equally beautiful when evaluated by the unaided eye. Therefore, Very Good and Good grade diamonds can be more budget friendly.





SYMMETRY

The arrangement, size, and shaping of diamond facets.


Why is symmetry important?

Symmetry grades refer to ow carefully and cleanly diamond facets have been cut in relation to each other. Low symmetry grades can have a negative affect on a diamond’s sparkle and its ability to hide inclusions. High symmetry grades are Excellent, Very Good, and Good.


Which symmetry is for me?

Symmetry can add value to a diamond. Excellent symmetry grades carry a premium while Very Good and Good grades can have little to no visual affect when evaluated by the unaided eye. Therefore, Very Good and Good grade diamonds can be more budget friendly

G: GOOD

A diamond with G symmetry still has good symmetry in terms of diamond positioning, alignment, and facet shaping. Slight misshaping or misalignments are minor and may have a slight effect on the diamond’s brilliance.

VG: VERY GOOD

A diamond with VG symmetry is next-to-best in terms of diamond positioning, alignment, and facet shaping. Any misshaping or misalignments are very minor and will have a very slight, if any, effect on the diamond’s brilliance.

EX: EXCELLENT

A diamond with EX symmetry is the result of superior craftsmanship by the diamantaire, and refers to the diamonds positioning, alignment, and facet shaping. It speaks to the quality of the diamond’s finish and augments its brilliance.


 

fluorescence

What is fluorescence?

The diamond’s tendency to emit a soft blue glow under Ultraviolet light.


Why is fluorescence important?

While fluorescence may have a stigma associated with it, it is not necessarily a bad thing. Fluorescent diamonds can often be less expensive. Generally, when diamonds have None or Faint Fluorescence, the appearance and quality of the diamond are unaffected and therefore so is the price.


Which fluorescence is for me?

In higher colors, such as D, E, and F, Four Mine does not recommend Medium or Strong Blue Fluorescence because it can make the diamond appear grayish or murky and brilliance can be negatively affected.


In lower colors, such as K, L, and M, higher fluorescence grades such as Medium or Strong Blue can actually improve the appearance of color. Fluorescence tends to make lower colored diamonds look whiter.

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None Fluorescence Diamond
Faint Fluorescence Diamond
Medium Fluorescence Diamond
StrongFluorescence Diamond