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).
2.77 Carat Diamonds
2.77 carats worth of diamond gives you a stone that weighs precisely 554 mg.
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Discerning purchasers of diamonds consider other characteristics of the diamond apart from carat size such as girdle thickness - how big the girdle is can impact on the diameter of a diamond of a certain carat weight.
One trick for saving money when buying a diamond is to choose a diamond which has a carat weight just below a popular number, such as buying a 0.98 carat diamond instead of a one carat diamond. In terms of diamond properties, the carat weight of the diamond should be considered alongside the many other characteristics of the diamond, in order to find a diamond which is balanced and hence not let down by being of poor quality in one of these departments.
Better a diamond with a flaw than a pebble without. Chinese Proverb .