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).
0.87 Carat Princess Shape Size on Hand
Size doesn't mean a lot until you see it in context - this article provides a hand as "context" to simulate the apparent size of a 0.87 carat weight diamond of princess shape. A princess shape diamond with a carat weight of 0.87 is usually about 5.3 mm long on the side; this can of course vary depending on cut.
You'll become more knowledgeable looking at diamond sizes online such as this 0.87 carat weight princess shape diamond, but nothing beats seeing it in person. The visual size for this 0.87 carat princess diamond will depend not just on the carat weight but as well on the width to length ratio of the ring finger the diamond ends up on.
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Diamonds almost always look larger when you move them onto a woman's hand; because of this fact, make sure you get a woman in the shop to put one on rather than putting it on your hand, which is probably much larger.
