Rating the quality of gem stone, pearl, etc.?

Question

As i know there are different kinds of pearl - man-made, cultured, South Sea, rice pearl, half moon pearl, fresh water, etc.?  What's the difference among them?  In terms of high grade, can you please rank them accordingly from the highest to the lowest.

Re- jade/coral - what color is considered of great value? for jade - is it  the transparent green, mint shaded green, etc. for coral - the very red or slight red orange?    Rank accordingly.

V B · Accepted Answer

This is a site with most of the gems listed.
http://geology.about.com/od/gems/Gemstones_and_Precious_Stones.htm

It was gathered by about.com.  The subject you want to research is geology.  (Some refer to this as gemology!)
Orange Coral to a peachy coral color is usually rated the highest grade, but this also depends on the size and clarity
of the stone even though the stone doesn't have facets. 
It has to be of solid color.

Kenneth · Answer

difficult point. search using search engines like google. just that can help!

Terrance · Answer

complex matter. look into using search engines like google. that could help!

gangsta4u · Answer

couldnt be bothered!

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Rating the quality of gem stone, pearl, etc.?

4 Answers