#Emerald has many special qualities, but professionals generally
agree that emeralds are, most of all, about color.
An emerald’s hue, tone, and saturation determine its value. Above photo
show color and trade by a source name. Some color terms for emerald are
Colombian, Zambian, Sandawana, and Brazilian.
“Colombian” is commonly used to describe the finest emerald color
– a color that matches the best stones from Colombia, which are slightly bluish
green with medium to medium-dark tone and strong to vivid saturation.
“Zambian” is often used to describe emeralds that are slightly
darker and more bluish than Colombian emeralds, often with higher clarity.
“Sandawana” describes emeralds that match those from that
location, which are commonly a bright, intense green. They’re usually found in
small sizes.
“Brazilian” describes emeralds that are lighter in tone than other
emeralds.
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