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Prehnite
Prehnite

Iolite
Iolite



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Prehnite
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Iolite

Prehnite Vs Iolite

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Astrology

Origin

Australia, Southern and central Africa, France
Brazil, USA, Canada, Madagascar, Sri Lanka, India, Burma

Color

Green, Colorless, gray, Yellow, White
Blue, Violet, Yellow, Grey

Streak

Colorless
-

For which Rashi?

Libra
Libra, Sagittarius, Taurus

Planet

Venus
Jupiter

Element of Planets

Earth
Water

Energy

-
-

How to Wear?

Finger

-
-

Ring Metal

-
-

Deities

Freya
-

Not to wear with

-
-

Powers

-
-

Birthstone

Planetary

-
-

Talisman

-
-

Physical Properties

Tenacity

Brittle
-

Solubility

-
-

Durability

-
-

Specific Gravity

2.80-2.952.6-2.7
1 7.18
👆🏻

Fracture

Uneven
-

Cleavage

Distinct on [001]
3,1

Mohs Hardness

6-6.57-7.5
2 10
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Chemical Composition

Ca2Al2Si3O12(OH)
Mg2Al4Si5O18

Optical Properties

Luster

Vitreous
Vitreous

Pleochroism

-
-

Dispersion

0.010.02
0.005 1
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Transparency

Translucent
Transparent, Translucent, Transparent to translucent

Refractive Index

1.611-1.6731.52-1.56
1 3.25
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Optic Character

-
-

Crystal System

Orthorhombic
Orthorhombic

Birefringence

0.021-0.033-9999
0 0.296
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Clarity

TranslucentHerve Nicolas Lazzarelli
Transparent to translucent

Benefits

Physical

Neurological

Enhances mental clarity and focus
Enhances mental clarity and focus

Cardiovascular

-
Supports heart health

Respiratory

Good
Excellent

Reproductive

-
-

Digestive

-
Supports digestive health

Psychology

Harmony
Intuition

Healing

Physical healing
Emotional healing

Qualities Associated

Harmony
Intuition

Prehnite Vs Iolite Fracture

Fracture is an important parameter when you compare Prehnite and Iolite Physical Properties. It is necessary to understand the significance of these properties, before you compare Prehnite Vs Iolite fracture. Whenever a gemstone chip breaks, it leaves a characteristic line along its breakage. Such lines are known as fracture and are used to identify the gemstones in their initial stages of production when they are in the form of rough minerals. Fracture is usually described with the terms “fibrous” and “splintery” to denote a fracture that usually leaves elongated and sharp edges. Fracture observed in Prehnite is Uneven.

Prehnite Vs Iolite Luster

A primary knowledge about Prehnite vs Iolite luster is useful in apparent identifications of these gemstones. Luster is the measure of light that gets reflected when incident on a finished cut gemstone. There are two major types of lusters: Silky and Adamantine. Since luster varies between two crystals of even the same gemstone, luster is limited to basic identification criteria. Prehnite exhibits Vitreous luster. Iolite, on other hand, exhibits Vitreous luster.