I want to purchase a diamond jewelry, can anyone let me know how to choose diamonds?

Answer:
I would ask this, what type of Diamond Jewelry are you looking to buy?

Here are a few things to remember:

- The Four “C”s to diamonds:

(C)arat: The weight ( not the size ) of the stone(s)

(C)ut: Not necessarily the shape but how well the facets are along witht he symmetry and polish.

(C)olor: Most diamonds have a “yellow” tinge. Lack of this is what is called ideal color…goes on a scale from (D-Z) D being best.

(C)larity: The lack of presence of inclusions in the stone based on 10x magnification

These aspects are important in purchasing a solitaire. ( bigger single stone diamond ring )

Pricing is based on the aspects mentioned above. But remember, they are all graded under 10x magnification. The Naked eye is a different story. This can save you a few dollars.

Also, “key weights” can drive up pricing. Example: a 1.00ct stone will demand a Much higher price than a stone that’s .98ct, however visually, they’ll both look the same becasue it is weight…not size.

Answer:
Beyond the 4 C's (Color, Cut, Clarity, Carat), look for verifiable certificates. There are GIA Certified Diamonds and AGS Certified Diamonds. A certificate is a “blueprint” of a diamond, it tells you the diamond's exact measurements and weight, as well as the details of its cut and quality.
Answer:
http://mdcdiamonds.com/Education.cfm
Answer:
The new FIVE c's:

cut, color, clarity, carat, CONFLICT FREE!

Answer:
quality over size
Answer:
Yes- but first- how much are you prepared to pay for this item?
Answer:
its a low carrot like 2 carrot but could be high-priced, and it must look good =]