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).
2.39 Carat Diamonds
2.39 carats refers to the weight of the diamond, which may also be expressed in terms of points - 2.39 carats is 239 points.
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2.39 carats worth of diamond gives you a stone that weighs precisely 478 mg. The width of a diamond with a weight of 2.39 carats is about 8.76 mm.
Diamond size means both the carat weight of the diamond and the width of the diamond, and the width of the diamond increases at a much slower rate compared to the carat weight of the 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. Is a handy hint - as well as searching for 2.39 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.
Ruby and sapphire are two gemstones which are significantly denser than diamond, which is why a one carat ruby or sapphire will generally looks smaller than a one carat diamond, if you've ever been confused in a store.
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. First-time diamond buyers who are in a hurry often just focus on the diamond carat size, which is a big mistake - other properties such as the clarity of the diamond are important in getting a diamond which is attractive not just in terms of its size, but also its appearance.
For me the diamond dawns are set. In rings of beauty. John Townsend Trowbridge .