TANZANITE TECHNICAL DATA
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Species--------------------------------Zoisite
Chemical
Formula-Ca2Al3(SiO4)3(OH)
Birthstone------------------------December
Mohs
Scale Hardness----------------#6.5
Durability----------------------------------Fair
Refractive
Index--------------1.691-1.700
Specific
Gravity-----------------------3.35+/-
Additional Information - See Below
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HOW TO USE THESE
PRICE TABLES TO PLACE AN ORDER
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TANZANITE
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Stock #
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ROUND / OVAL
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TARO+Size
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Size
(mm)
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Shape
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Color
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Clarity
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Price (US$)
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Add To Cart
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3.0
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Round
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Lt. Blue
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V.G.
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$19.80
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Cart
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2.5
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Round
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Lt. Blue
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V.G.
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$7.75
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Cart
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5.0x3.0
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Oval
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Lt. Blue
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V.G.
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$32.50
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Cart
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TANZANITE ADDITIONAL INFORMATION
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Color
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The color of Tanzanite is a combination of purple
and blue hues varying from light to intense. The rough can be oriented for
cutting to emphasize either color.
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Sources
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Tanzanite was discovered in Tanzania in 1967 and
is the only souce known so far.
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Treatment
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All Tanzanite is heat treated to change its
natural yellowish brown color to blue violet.
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Care
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Tanzanite is sensitive to sudden temperature
changes and should not be subjected to steam or ultra sonic cleaners. It is
also vulnerable to hydrocloric and other acids.
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Inclusions
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Our material is selected to be eye clean.
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Uses
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Because is it brittle Tanzanite is most suitable
in well protected settings.
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Value
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Although lighter colors are moderately priced the
richer shades are much more expensive. Note- We can acquire larger and darker
stones if desired.
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