Carat, Color,
Clarity and Cut are the most important things to value all gemstones.
Carat : the larger a gemstone, the more rare
Color : the more pure the color in a gemstone, the more rare
Clarity : the purer a gemstone, the more brilliant
Cut : the better cut a gemstone, the more brilliant
You may note that each kind of gemstones has its own characteristics.
To buy or to possess them depends on your own personal taste.
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