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| The quality of a diamond is determined by four factors commonly known as the "4 Cs" -- Carat weight, Clarity, Color, and Cut. |
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| Carat |
1 carat = 200 milligrams = 100 points |
| Color |
For a diamond to be considered "colorless," the G.I.A. requires that it be a D, E, or F. However, the D-Z scale is continuous, so the difference between an F and G is very small. The average color for engagement diamonds in the United States is G to H. |
| Clarity |
There are several grading systems used to describe clarity. By far, the most popular is the Gemological Institute of America's (G.I.A.) scale, which ranks diamonds as Flawless (FL), Internally Flawless (IF), very very slightly included (VVS), very slightly included (VS), slightly imperfect (SI), and imperfect (I) |
| Cut |
http://www.diamondreview.com/tutor/4cs/tutor_4cs_cut5.shtml |
| Shape |
Round Family-centered, dependable, unaggressive.
Oval Individualistic, creative, well-organized, willing to take chances.
Heart Sentimental, feminine, sensitive, trusting.
Rectangle/Square Disciplined, conservative, efficient, honest.
Pear Conforming, considerate, adaptable.
Marquise Extroverted, aggressive, innovative, career-centered. |
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| Diamond G.I.A Code and Price: |
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| Carat |
shape |
color |
clarity |
cut |
top 10% |
top 25% |
Average |
lower 25% |
low 10% |
| 0.25 |
Round |
D |
FL |
VG |
$1,290.00 |
$1,290.00 |
$1,290.00 |
$1,290.00 |
$1,290.00 |
| 0.25 |
Round |
E |
FL |
EX |
$1,189.00 |
$1,189.00 |
$1,189.00 |
$1,189.00 |
$1,189.00 |
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| 0.5 |
Round |
D |
FL |
EX |
$6,698.00 |
$5,931.00 |
$4,149.00 |
$2,367.00 |
$1,600.00 |
| 0.5 |
Round |
D |
IF |
EX |
$5,961.00 |
$5,257.00 |
$3,682.00 |
$2,089.00 |
$1,403.00 |
| 0.5 |
Round |
D |
VVS1 |
EX |
$5,727.00 |
$5,068.00 |
$3,537.00 |
$2,005.00 |
$1,346.00 |
| 0.5 |
Round |
D |
VVS2 |
EX |
$5,400.00 |
$4,778.00 |
$3,333.00 |
$1,888.00 |
$1,266.00 |
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| 0.5 |
Round |
E |
FL |
EX |
$6,458.00 |
$5,717.00 |
$3,997.00 |
$2,276.00 |
$1,535.00 |
| 0.5 |
Round |
E |
IF |
EX |
$6,316.00 |
$5,591.00 |
$3,908.00 |
$2,225.00 |
$1,500.00 |
| 0.5 |
Round |
E |
VVS1 |
EX |
$6,079.00 |
$5,381.00 |
$3,760.00 |
$2,140.00 |
$1,442.00 |
| 0.5 |
Round |
E |
VVS2 |
EX |
$5,748.00 |
$5,088.00 |
$3,554.00 |
$2,020.00 |
$1,360.00 |
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| 0.5 |
Round |
F |
FL |
EX |
$6,101.00 |
$5,400.00 |
$3,770.00 |
$2,139.00 |
$1,438.00 |
| 0.5 |
Round |
G |
FL |
EX |
$5,572.00 |
$4,928.00 |
$3,432.00 |
$1,936.00 |
$1,292.00 |
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| 0.75 |
Round |
D |
FL |
EX |
$11,078.00 |
$9,804.00 |
$6,846.00 |
$3,887.00 |
$2,614.00 |
| 0.75 |
Round |
D |
IF |
EX |
$10,912.00 |
$9,657.00 |
$6,743.00 |
$3,828.00 |
$2,574.00 |
| 0.75 |
Round |
D |
VVS1 |
EX |
$10,634.00 |
$9,412.00 |
$6,571.00 |
$3,730.00 |
$2,570.00 |
| 0.75 |
Round |
D |
VVS2 |
EX |
$10,246.00 |
$9,068.00 |
$6,330.00 |
$3,593.00 |
$2,414.00 |
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| 0.75 |
Round |
E |
FL |
EX |
$10,692.00 |
$9,463.00 |
$6,603.00 |
$3,754.00 |
$2,525.00 |
| 0.75 |
Round |
E |
IF |
EX |
$10,525.00 |
$9,316.00 |
$6,505.00 |
$3,695.00 |
$2,485.00 |
| 0.75 |
Round |
E |
VVS1 |
EX |
$10,248.00 |
$9,070.00 |
$6,334.00 |
$3,597.00 |
$2,419.00 |
| 0.75 |
Round |
E |
VVS2 |
EX |
$9,860.00 |
$8,727.00 |
$6,093.00 |
$3,460.00 |
$2,326.00 |
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| 0.75 |
Round |
F |
FL |
EX |
$10,103.00 |
$8,942.00 |
$6,264.00 |
$3,549.00 |
$2,388.00 |
| 0.75 |
Round |
G |
FL |
EX |
$9,367.00 |
$8,289.00 |
$5,784.00 |
$3,280.00 |
$2,202.00 |
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| 1 |
Round |
D |
FL |
EX |
$21,152.00 |
$18,714.00 |
$13,048.00 |
$7,382.00 |
$4,944.00 |
| 1 |
Round |
D |
IF |
EX |
$20,701.00 |
$18,315.00 |
$12,771.00 |
$7,227.00 |
$4,840.00 |
| 1 |
Round |
D |
VVS1 |
EX |
$19,948.00 |
$17,649.00 |
$12,308.00 |
$6,967.00 |
$4,668.00 |
| 1 |
Round |
D |
VVS2 |
EX |
$18,895.00 |
$16,718.00 |
$11,661.00 |
$6,604.00 |
$4,427.00 |
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| 1 |
Round |
E |
FL |
EX |
$20,298.00 |
$17,959.00 |
$12,525.00 |
$7,090.00 |
$4,751.00 |
| 1 |
Round |
E |
IF |
EX |
$18,579.00 |
$16,439.00 |
$11,466.00 |
$6,494.00 |
$4,353.00 |
| 1 |
Round |
E |
VVS1 |
EX |
$17,957.00 |
$15,888.00 |
$11,083.00 |
$6,278.00 |
$4,210.00 |
| 1 |
Round |
E |
VVS2 |
EX |
$17,086.00 |
$15,118.00 |
$10,548.00 |
$5,977.00 |
$4,010.00 |
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| 1 |
Round |
F |
FL |
EX |
$18,952.00 |
$16,769.00 |
$11,696.00 |
$6,623.00 |
$4,439.00 |
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