Daily Archives: January 13, 2011

4Cs of Diamonds

Everybody knows that diamonds are very valuable. But what determines their values?

You guessed it! It is the Four C’s of a diamond that determines its value.

Carat – represents the weight. One carat is equal to 0.2 grams, about the same weight as a paperclip. Don’t mix the “carat” with “karat” which refers gold purity.

Clarity – refers to the absence of (internal) inclusions and (external) blemishes. Diamonds without these birthmarks are rare, and rarity affects a diamond’s value. Using the GIA International Diamond Grading System™, diamonds are assigned a clarity grade that ranges from flawless (FL) to diamonds with obvious  inclusions (I3).

Color – Diamond color is all about what you can’t see. Diamonds are valued by how closely they approach colorlessness – the less color, the higher their value. (The exception to this is fancy-color diamonds, such as pinks and blues, which lie outside this color range.)

Cut – The cut of any diamond has three attributes: brilliance (the total light reflected from a diamond), fire (the dispersion of light into the colors of the spectrum), and scintillation (the flashes of light, or sparkle, when a diamond is moved).

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The 3rd Math Olympiad Test is on Jan. 17, 2011, at 7:15pm

Just a reminder to all “Shiny Gems Math Olympiad Team” members:

Next Monday (Jan. 17, 2011) evening, we will have the 3rd test. The start time is 7:15pm. 

The volunteer familes are: Andy Zhang’s family and Bryce Hui’s family.

The 4th test date is Feb. 14 and the last is Mar. 21.