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Gahnospinel
Gahnospinel

Blue John
Blue John



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Gahnospinel
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Blue John

Gahnospinel Vs Blue John

Astrology

Origin

Sri Lanka
-

Color

Blue
White, Colorless, Blue, Red, Green, Yellow, Violet

Streak

-
-

For which Rashi?

Sagittarius, Scorpio
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Planet

Pluto
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Element of Planets

-
-

Energy

-
-

How to Wear?

Finger

-
-

Ring Metal

-
-

Deities

Hephaestus
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Not to wear with

-
-

Powers

-
-

Birthstone

Planetary

-
-

Talisman

-
-

Physical Properties

Tenacity

-
-

Solubility

-
-

Durability

-
-

Specific Gravity

3.65-4.553.00-3.25
1 7.18
👆🏻

Fracture

Conchoidal
-

Cleavage

None, but may exhibit slight parting
Perfect

Mohs Hardness

7.5-8-9999
2 10
👆🏻

Chemical Composition

(Mg,Zn)Al 2O 4Gemdat.org , Management Team (2012)
CaF 2Michael O’Donoghue , Gems, Sixth Edition (2006)

Optical Properties

Luster

Vitreous
-

Pleochroism

-
-

Dispersion

0.020.02
0.005 1
👆🏻

Transparency

-
Transparent

Refractive Index

1.735-1.7901.432-1.436
1 3.25
👆🏻

Optic Character

-
-

Crystal System

Isometric
-

Birefringence

-9999-9999
0 0.296
👆🏻

Clarity

TransparentUlrich Henn and Claudio C. Milisenda
Transparent

Benefits

Physical

Neurological

-
Enhances mental clarity and focus

Cardiovascular

-
Supports heart health

Respiratory

-
Excellent

Reproductive

-
-

Digestive

-
-

Psychology

Empowerment
Harmony

Healing

-
Emotional healing

Qualities Associated

Transformation
Mental Clarity

Gahnospinel Vs Blue John Fracture

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

Gahnospinel Vs Blue John Luster

A primary knowledge about Gahnospinel vs Blue John 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. Gahnospinel exhibits Vitreous luster.