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Gedrite
Gedrite

Howlite
Howlite



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Gedrite
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Howlite

Gedrite Vs Howlite

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Astrology

Origin

Southern and central Africa
Southern and central Africa

Color

Brown, Green, gray, White
Blue, Colorless, White

Streak

gray, White
White

For which Rashi?

-
Gemini, Virgo

Planet

-
-

Element of Planets

-
Earth

Energy

-
-

How to Wear?

Finger

-
-

Ring Metal

-
-

Deities

-
Quan Yin

Not to wear with

-
-

Powers

-
-

Birthstone

Planetary

-
-

Talisman

-
-

Physical Properties

Tenacity

-
-

Solubility

-
-

Durability

-
-

Specific Gravity

3.15-3.2592.45-2.58
1 7.18
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Fracture

-
Conchoidal

Cleavage

Gedrite   Magnesiogedrite , Comments: Dark gray cleavage fragment of magnesiogedrite (gedrite). , Location: Bamble, Telemark, Norway. , Scale: See Image.
None

Mohs Hardness

5.5-63-3.5
2 10
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Chemical Composition

(Mg,Fe2+ ) 2[(Mg,Fe2+ ) 3Al 2](Si 6Al 2)O 22(OH) 2Anthony et al , Handbook of mineralogy (2001)
Ca 2B 5SiO 9(OH) 5Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references

Optical Properties

Luster

Vitreous
Vitreous

Pleochroism

Weak to moderate
-

Dispersion

0.020.01
0.005 1
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Transparency

Transparent
-

Refractive Index

1.625-1.7181.583-1.608
1 3.25
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Optic Character

-
-

Crystal System

Orthorhombic Dipyramidal H-M Symbol (2/m 2/m 2/m) Space Group: P nma
monoclinic

Birefringence

-99990.019
0 0.296
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Clarity

Transparent
-

Benefits

Physical

Neurological

-
Aids in mental clarity and focus

Cardiovascular

-
-

Respiratory

-
Good

Reproductive

-
-

Digestive

-
-

Psychology

Focus
Calming

Healing

-
Emotional healing

Qualities Associated

Protection
Calming

Gedrite Vs Howlite Fracture

Fracture is an important parameter when you compare Gedrite and Howlite Physical Properties. It is necessary to understand the significance of these properties, before you compare Gedrite Vs Howlite 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. Howlite fracture is Conchoidal.

Gedrite Vs Howlite Luster

A primary knowledge about Gedrite vs Howlite 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. Gedrite exhibits Vitreous luster. Howlite, on other hand, exhibits Vitreous luster.