I finally bought my diamond for the engagement ring. It’s a beauty and I think I got a real good price for it. If you haven’t done your homework, finding the perfect ring can be a very stressful ordeal even when you know all the characteristics you’re looking for in the diamond. Knowing the four C’s of the diamond is a good start, but oftentimes, if you want that perfect diamond, you need to go above and beyond the four C’s.

The diamond I bought is a 1.20 Carat, cushion Cut, G Color, and VS1 Clarity. This completes the 4 C’s category, but there were so many diamonds with these exact specifications that varied in price drastically from one diamond to another. I had to believe that there were other factors that affected the price of the diamond, beyond the 4 C’s. For each of the different cuts available in a diamond, the perfect specifications beyond the 4 C’s vary for different type of cuts.



For the cushion cut, the more square the diamond is, the better it is. Some prefer more elongated shape, but that can be reserved for other cuts, such as pear, emerald, oval, and marquise cuts. The less square the cuts are, the less the quality of the diamond becomes.

Depth and Table Ratio

The depth and table of the diamond are important factors to consider because they help reflect the light back to your eye to maximize the sparkling effect. If these ratios are not within a good range, the diamond will lose the sparkling effect and the quality of the diamond will become less. The depth ratio is the ratio of the total depth and the total width (or diameter). The table ratio is the ratio of the total table width and the total width (or diameter). The numbers you should look for differs for each type of cut.


If the diamond has any fluorescence effect, it loses quality value. You want to avoid diamonds with fluorescence. Under natural light conditions, diamonds by nature give off a blue hue and can be more evident under a UV lamp (or black light). The more blue it gives off, the lower the quality of the diamond. Fluoresce will interfere with the flow of light in higher color grades and should be avoided at all costs.

Polish and Symmetry

Look for “Very Good” or “VG” under polish and symmetry. Anything beyond that, the diamond will lose its brilliance. If you have to go lower, then “Good” should be the absolute minimum. I wouldn’t even bother looking at other ratings lower than that. Polish and symmetry mean exactly what you think they mean. The better polished the diamond is, the better the diamond it will be. The more symmetrical the diamond is, the better the diamond it will be.

Buy Your Diamond Online

I would highly recommend buying your diamond online. Not only is it much cheaper than buying it from your local jewelry store, the range of selections of diamonds is unlimited. Perhaps, that’s why I struggled so much purchasing my diamond. But I am confident to say that the diamond I purchased is the perfect diamond I was looking for. I recommend buying from Blue Nile. They’re not the cheapest in the world of web shopping, but they are competitive. Also, if you use your Discover Card and shop through their shopping portal, you can earn 5% cash back on your purchase. So, if you m