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Prehnite
Prehnite

Piemontite
Piemontite



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Prehnite
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Piemontite

Prehnite Vs Piemontite

Astrology

Origin

Australia, Southern and central Africa, France
Italy

Color

Green, Colorless, gray, Yellow, White
Red, Reddish, Brown, Black, Yellow

Streak

Colorless
Red

For which Rashi?

Libra
-

Planet

Venus
-

Element of Planets

Earth
-

Energy

-
-

How to Wear?

Finger

-
-

Ring Metal

-
-

Deities

Freya
-

Not to wear with

-
-

Powers

-
-

Birthstone

Planetary

-
-

Talisman

-
-

Physical Properties

Tenacity

Brittle
Brittle

Solubility

-
-

Durability

-
-

Specific Gravity

2.80-2.95-9999
1 7.18
👆🏻

Fracture

Uneven
Uneven, Splintery

Cleavage

Distinct on [001]
[001] good, [100] distinct

Mohs Hardness

6-6.56-6.5
2 10
👆🏻

Chemical Composition

Ca2Al2Si3O12(OH)
Ca2Al3(SiO4)(Si2O7)O(OH)

Optical Properties

Luster

Vitreous
Vitreous

Pleochroism

-
visible

Dispersion

0.010.02
0.005 1
👆🏻

Transparency

Translucent
-

Refractive Index

1.611-1.6731.725-1.756
1 3.25
👆🏻

Optic Character

-
-

Crystal System

Orthorhombic
monoclinic

Birefringence

0.021-0.0330.025-0.076
0 0.296
👆🏻

Clarity

TranslucentHerve Nicolas Lazzarelli
-

Benefits

Physical

Neurological

Enhances mental clarity and focus
-

Cardiovascular

-
-

Respiratory

Good
-

Reproductive

-
-

Digestive

-
-

Psychology

Harmony
Spiritual growth

Healing

Physical healing
Emotional healing

Qualities Associated

Harmony
Balance

Prehnite Vs Piemontite Fracture

Fracture is an important parameter when you compare Prehnite and Piemontite Physical Properties. It is necessary to understand the significance of these properties, before you compare Prehnite Vs Piemontite 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. Piemontite fracture is Uneven and Splintery.

Prehnite Vs Piemontite Luster

A primary knowledge about Prehnite vs Piemontite 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. Piemontite, on other hand, exhibits Vitreous luster.