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).
1.63 Carat Diamonds
To convert the weight of this diamond in carats to milligrams, you multiply the number of carats by 200, in this case multiplying 1.63 carats by 200 to get 326 mg.
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When you see a 1.63 carat diamond, expect to see about 7.70 mm worth of diamond.
To help you analyse your various diamond options, one measure you can use is the cost per carat measure.
A diamond is a chunk of coal that is made good under pressure. Henry Kissinger .
Savvy diamond buyers have learnt to search for diamonds that do not have round numbers in their carat weight - for example, these buyers will search for a diamond with the carat weight just below one or two carats.
God forbid that this should be a problem for anyone, but it may be that the diamond, once it actually put on the fiance's hand, may appear to be too big and unwieldy. Make sure to take this into account when you're shopping around. In the quest for finding the largest diamond possible within a budget, it can be fun to consider famous large diamonds like ashberg diamond, which had a huge weight of 102 carats - about 200 times the mass of a diamond used in a typical engagement ring.
People say the four cs for a reason - diamond carat size is just one of the four cs and the others are arguably just as important in determining how 'attractive' and 'good' a diamond is.
