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).
1.34 Carat Weight Princess Diamond Shown on a Hand
This article has a useful illustration showing you the apparent size of a 1.34 carat size princess shape stone, when viewed in place on the hand of a woman. Carat weight isn't the be all and end all - the depth of the diamond's cut will also affect the apparent size of the rock; a diamond like this 1.34 carat one will usually be around 6.2 mm typically. The photo in this page shows an L 1/2 ring size, which is typical or perhaps on the small side of typical for a female ring.
Some advice for how to use the information on this page is to initially narrow down your size range; then you can go into stores and try diamonds out in person, armed with this prior knowledge.
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Long slender fingers will affect how a diamond appears just as much as the carat size of the diamond - so look beyond just considering the 1.34 carat weight of this princess stone. Later after the diamond is purchased, it's likely you might be pleasantly surprised by how much larger the diamond appears on the female hand, than when seen in isolation.
