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).
2.67 Carat Diamonds
A diamond with a size of 2.67 carats weighs in normal everyday weight units exactly 534 mg. Although it would seem so, the carat weight of a diamond and the diameter of a diamond have an interesting relationship - as the carat weight of the diamond increases, the diameter of the diamond grows at a much slower speed.
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Is a handy hint - as well as searching for 2.67 diamonds, try starting your search by examining another property of the diamond, for instance the name of an online jewellery store you would be happy to buy a diamond from. 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.
There are three things extremely hard: steel, a diamond, and to know one's self. Benjamin Franklin .
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.