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Zoisite has been known
for nearly two centuries as a sometimes ornamental stone of limited
distribution. Only in 1967 was the blue gemstone variety found in
Tanzania. The variety was named Tanzanite and was a surprise to mineralogists
and gemologists alike in that it had come from a very un-gemstone like
mineral. The blue-lavender color of tanzanite is unique and sets it
apart from the other gemstones.
Besides Tanzanite, Zoisite
has produced other attractive specimens that are of interest to
collectors and Jewelers. A pink variety called Thulite is usually
used for beads and cabochons. A brilliant green variety is associated
with medium grade Rubies and is quite popular as an ornamental stone.
The red rubies are often distorted and irregularly spread throughout the
sea of massive Green Zoisite. It is one of the most colorful of
ornamental stones. One of the rarest varieties of this Ornamental
Zoisite is Blue Zoisite with Ruby. Rarely see and mostly unheard of Blue
Zoisite with Ruby commands a high price among collectors and Jewelers
alike.
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