After reading some of the threads on here tell me about the cut of a diamond.I know there is a round cut, pear cut etc, but in reading some one said make sure you get a good cut. Aren't they all good? How can you tell if it is not?
The cut is the most important factor in the beauty of a diamond. This more than anything is what makes a diamond sparkle. The proportions of the facets have to be cut just right to maximize the light that enters the stone. Some jewelers will cut the stone to maximize the carat weight but will sacrifice the stone's "brilliance." In my opinion there really is no way to tell how good a cut is by looking at it unless you're a gemologist. This is why I recommend buying from a trusted jeweler that has history and a good reputation. You just have to trust that their reputation was built on the fact that they cut their stones to maximize beauty and not to deceive their customers.
There are a lot of different cuts of diamonds, and the popularity of the shapes changes. Right now, Princess cuts, Marquise cuts, and Cushion cuts are all the rage. The Round Brilliant remains the most popular, and never goes out of style. How well they are cut is a factor in deciding if a diamond is good quality or not, but it isn't the only thing. Clarity also affects how good your diamond looks. If it is cloudy or has a lot of flaws in it, it will be less likely to reflect the light and give it that "wow" effect. Color is also important. When a jeweler refers to the "color" of a diamond, they are not referring to a J. Lo pink diamond or any of the fancy-colored stones. Those are very rare and even more expensive. What you are looking for is the closest to colorless that you can get within your budget.
Different websites can show you tutorials on what is called "The 4 C's" (cut, clarity, color, and carat weight). Pricescope.com is great for this. If you are shopping for a diamond, going online can save you a ton of money. Some websites offer you 3-D images and even a chance to look at the exact diamond you want under a "virtual loupe" at 30X magnification. x
I don't want to sound like I'm advertising for them, but their images make me want to buy diamonds all the time!
I will strongly suggest Good Old Gold, goodoldgold.com as well. They pretty much live for cut. They take many photos, and do many tests on their stones before selling. Their site is pretty comprehensive, and they do a ton of educational videos.