Saturday, December 31, 2011

Gemstone of the Week: Emerald

(Emeralds still in the rough)

Emeralds are an amazingly beautiful gemstone.  They are the green variety of the Beryl species of gems.  Some believe that only the dark green stones should be termed as being "Emeralds" and the lighter ones simply as "green Beryl."  There is also a disagreement between the European and American gemologists regarding how an Emerald should get it's colour.  the European gemologists tend to believe that the green should come from the presence of chromium, while the American gemologists tend to think the stones coloured by vanadium should also be considered Emeralds.  None of this debate as to what is or is not an "Emerald:" has any real bearing as the the value.  For a stone that has good, fully saturated, colour and is transparent and no visible inclusions (Emeralds always contain some amount of inclusions or fractures) the value is about $5,000 per carat for stones of one carat.  For stones of 6 or more carats that are top quality, the value (wholesale) can be upwards of $10,000 per carat.  However, Emeralds can be as low as $10 per carat for stones that have little colour, poor transparency, and overly flawed.

No comments:

Post a Comment