Quick and Easy Buying Guide
Carat weight: 1 carat = 200 milligrams = 6.5 mm diameter. Doubling weight doesn't double diameter.
Diamond clarity: FL/IF/VVS/VS = super expensive, near perfect. SI = best value if you can check a photo for obvious inclusions (defects).
Color: D-G = colorless, expensive, only if you have money to burn. H-J = best value. Can go lower in gold metal settings than white metal.
Cut: Better cut ratings let more light into a diamond, making it sparkle more. Very important property, don't skimp here.
Set a budget and minimum cut (Premium). Go J color for gold and I/H for white metals. Go searching for SI1/SI2 clarity diamonds at James Allen. Pick a diamond with small/no inclusions. Choose a ring setting and buy it risk-free (60-day returns).
0.67 Carat Diamonds
The width of a diamond with a weight of 0.67 carats is about 5.70 mm.
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What many people don't realise is that a 5.70 mm wide diamond can be a range of weights, not just exactly 5 carats, because the diamond can vary in depth.
In evaluating the value of a 0.67 carat diamond, one thing you can do is work out the precise cost per carat of diamond. The width of the diamond grows much more slowly than the carat weight of a diamond.
If you're willing to try a few things to get a bargain, one thing you can try is searching for a diamond which has a strange carat weight, such as 0.96 carats. Often diamonds with these strange carat weights can be picked up for a bargain because they are not as sought-after even though they are practically the same size as the more popular 1.00 carat diamonds. If you're umming and ahhing about whether to get a diamond or another precious gemstone, a relevant piece of information regarding their carat size is that the stones have varied densities, leading to different sizes for stones of the same weight.
I used to dream how good it would be to be Willie Mays or Mickey Mantle. My dreams have died. Even the rotten rings aren't what they're supposed to be. I'll buy my own diamonds. I can afford it now. No one gives you anything, you've got to get it for yourself. Reggie Jackson .
A large diamond which has a huge crack down the middle, or alternatively a big yucky looking inclusion, is not a good look - it looks like someone has gone for size and sacrificed all the other desirable properties of the diamond. Clarity, for example, can be just as important in picking a diamond.