Grandidierite

Marcasite

Grandidierite Vs Marcasite

Grandidierite

Marcasite

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Astrology

Origin

Madagascar

Southern and central Africa

Color

Green

Yellow, White

Streak

White

gray, Brownish, Black

For which Rashi?

Planet

Element of Planets

Energy

How to Wear?

Finger

Ring Metal

Deities

Not to wear with

Powers

Birthstone

Planetary

Talisman

Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

2.85-3.004.80-4.90

1 7.18

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Fracture

Uneven

Cleavage

Perfect

{010} Indistinct

Mohs Hardness

7.56-6.5

2 10

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Chemical Composition

(Mg,Fe)Al 3(BO 4)(SiO 4)OUlrich Henn and Claudio C.

FeS 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Optical Properties

Luster

Vitreous, Pearly

Pleochroism

visible

Dispersion

0.040.05

0.005 1

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Transparency

Refractive Index

1.578-1.639-9999

1 3.25

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Optic Character

Crystal System

Orthorhombic

Birefringence

0.037-0.039-9999

0 0.296

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Clarity

Benefits

Physical

Neurological

Enhances mental clarity and focus

Cardiovascular

Respiratory

Reproductive

Digestive

Psychology

Wisdom

Protection

Healing

Physical healing

Qualities Associated

Harmony

Protection

Grandidierite Vs Marcasite Fracture

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

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Grandidierite Vs Marcasite Luster

A primary knowledge about Grandidierite vs Marcasite 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. Grandidierite exhibits Vitreous and Pearly luster.