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).
2.37 Carat Diamonds
The diameter of a 2.37 carat diamond is approximately 8.73 mm.
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In evaluating the value of a 2.37 carat diamond, one thing you can do is work out the precise cost per carat of diamond. Odd carat weights are carat weights which don't form round numbers, for example 1.97. Often diamonds with odd carat weights are quite a bit cheaper than diamonds with round number carat weights.
2.37 carats specifies a certain size of diamond, but what about all the other properties of the diamond? Seasoned diamond buyers make sure to pay attention to all the properties of the diamond when the searching for that perfect stone, in order to make a balanced purchase which isn't just dominated by size considerations.
Not all gemstones have the same density, leading to an often confusing fact that when you look at a one carat diamond and a one carat ruby, apart from differences in cut they will probably appear different in size due to the difference in their density. Some unethical store assistants will talk about average diamond size in trying to pressure couples into buying a diamond ring more expensive than they can afford - even though the average is around half carat, you should be buying a diamond based on what you can afford, and what you as a couple would feel comfortable buying.
So how good do you think a 10 carat diamond which looks a horrible uneven black colour would appear on an engagement ring? Exactly - diamond buyers need to also consider other properties such as the colour of the stone, which is not picked correctly can negate any attractiveness of having a very large diamond.
The soul is placed in the body like a rough diamond, and must be polished, or the luster of it will never appear. Daniel Defoe .