Cut grade is the key factor in determining the total form of a diamond since a defectively cut diamond will seem dull even with great clarity and color. Conversely, a well cut diamond can have a faintly lower color (G-H) or clarity (SI1-SI2) and still look rather striking, thanks to its expert ability to bring sparkle and brilliance.
Cut grade offers a single rating which includes a range of factors, making it an easy but fundamental tool in assessing a diamond. A usual mistake is to focus on these separate factors instead of depending mainly on the Cut grade, which already covers all of them. Only in comparisons of two diamonds of similar Cut grade must the individual Cut components be used as to further refine your search. With that, here are those individual factors and a few tips:
Any culet size that is Medium or smaller will be indiscernible to the naked eye, and have no undesirable impact on how a diamond looks.
An Extremely Thin girdle is more inclined to chip, and therefore must be avoided for diamonds that will be set in a ring. Earrings or pendants are not as exposed to rough contact and thus are not as likely to chip around the girdle too. Even Very Thin girdles in Princess Cut diamonds should be avoided, as this shape already comes with sharp corners that make chipping more probable. If you do get a Princess Cut diamond with a Very Thin girdle, set it in a design where the corners are protected.
For diamonds whose polish grade is Excellent to Good, any polishing flaws will not be noticeable to the naked eye, nor make an impact on the gem's total appearance. For diamonds whose clarity grades are 1 or lower, even a polish grade of Fair is adequate, in view of the fact that these diamonds already have internal inclusions that are discernable to the naked eye, making any polish markings not as relevant. 75 carats, any polish grade of Fair or better will not influence the form of the diamond to an inexpert observer. Poor is the only polish grade that must be avoided irrespective of the clarity or size of the diamond. Learn how to sell my engagement ring in indianapolis!
For diamonds that have symmetry grade of Excellent to Good, symmetry is not to be used as a main factor in selecting them, because each of these grades can be expected of diamonds of excellent appearance. Symmetry is more crucial in diamonds with VVS2 Clarity and higher, as the very refined defects coming from Fair or Poor symmetry (which can look a lot like pinpoint inclusions), would impede the diamond's otherwise unblemished appearance.
Even though it makes a small effect on appearance, symmetry has a weighty impact on price; a diamond with Excellent Symmetry and Polish can be 10%-15% pricier than one with Good Symmetry and Polish. Finally, as diamonds with Poor symmetry have imperfections that are visible to the naked eye, they must be avoided completely. Know how to sell a diamond indianapolis here!