A species of Minerals, Also known as Thulite , Illuderite, Orthozoisite
This rare mineral comes in a wide varieties of colors, including several prized gemstones. The most famous of these is Tanzanite, a blue-purple variety of zoisite that is mined in Tanzania and is extremely sought after (though only mined since the 1960s, it is quite popular and sometimes considered the birthstone for December). Anyolite and Thulite, which are striking shades of green and pink, respectively, are also zoisite varieties.
Hardness:
6 - 7
Density:
3.35 g/cm³
On This Page
Properties
Values
Market Price
How to Care
Characteristics
Cultural
Common Questions
General Info About Zoisite
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Physical Properties of Zoisite
Luster
Vitreous
Diaphaneity
Transparent to translucent
Colors
Colourless, purple, greyish-white, grey, yellowish-brown, yellow, pink, green
Magnetism
Non-magnetic
Tenacity
Brittle
Cleavage
Perfect
Fracture
Conchoidal, Uneven
Streak
White
Crystal System
Orthorhombic
Hardness
6 - 7 , Hard
Density
3.35 g/cm³, Normal Weight
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Chemical Properties of Zoisite
Chemical Classification
Silicates
Formula
Ca2Al3[Si2O7] [SiO4]O(OH)
Elements listed
Al, Ca, H, O, Si
Common Impurities
Fe, Mn, Mg, Cr, Ti, Ca, Na, V, Sr, H2O
Optical Properties of Zoisite
Refractive Index
1.685-1.707
Birefringence
0.006-0.013
Pleochroism
Strong
Dispersion
0.0196
Optical Character
Biaxial positive
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Rarity
Uncommon
Collection Recommendation
4.1 out of 5
Popularity
3.8
Aesthetic
4.1
Rarity
4.1
Sci-Cultural Value
4
The Market Price of Zoisite
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Rough/Tumbled Price
Smaller Than Hand (0-1.5in)
$1 - $25
Close Hand (1.5-3in)
$25 - $55
Equal To Hand (3-6in)
$55 - $80
Bigger Than Hand (>6in)
$75
How to Care for Zoisite?
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Durability
Nondurable
Scratch resistance
Poor
Toughness of Zoisite
Poor
Fair
Good
Excellent
Zoisite's toughness is poor, making it susceptible to damage from breaking, chipping, or cracking due to its perfect cleavage when used daily.
Stability of Zoisite
Sensitive
Stable
Zoisite is stable for daily use given its resistance to water, sunlight, and dry conditions. It cleans easily but should avoid high heat and harsh chemicals.
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Characteristics of Zoisite
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Cultural Significance of Zoisite
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Uses of Zoisite
Zoisite is a rarely-occurring mineral, and thus has few uses in industry. However, this rock is a common source of popular gemstones, including tanzanite, thulite, anyolite, and clinozoisite. All those gemstones are considered to be collector's items due to their rarity.
Distribution of Zoisite
Sources of zoisite include Tanzania (tanzanite), Kenya (anyolite), Norway (thulite), Switzerland, Austria, India, Pakistan, and the U.S. state of Washington.
Etymology of Zoisite
The mineral was described by Abraham Gottlob Werner in 1805. He named it after the Carniolan naturalist Sigmund Zois, who sent him its specimens from Saualpe in Carinthia. Zois realized that this was an unknown mineral when it was brought to him by a mineral dealer, presumed to be Simon Prešern, in 1797.
Healing Properties of Zoisite
Zoisite is believed to act as a "reset button," especially after a trauma or interruption in daily life. Many believe it promotes relaxation and improves physical ailments when worn. It is said to have the power to release a person's creative energy that might otherwise be blocked, allowing the individual to focus and regain intention with their goals.
Chakras
Heart
Common Questions People Also Ask
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