Grandidierite

Dumortierite

Grandidierite Vs Dumortierite

Grandidierite

Dumortierite

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Astrology

Origin

Madagascar

Southern and central Africa

Color

Green

Blue, Violet, Brown, White, Greenish, pink

Streak

White

For which Rashi?

Leo, Sagittarius

Planet

Saturn

Element of Planets

Water

Energy

How to Wear?

Finger

Ring Metal

Deities

Isis

Not to wear with

Powers

Healing

Birthstone

Planetary

Talisman

Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

2.85-3.003.26-3.41

1 7.18

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Fracture

Uneven

Fibrous, ConchoidalWalter Schumann

Cleavage

Perfect

Distinct on {100}, poor on {110}; parting on {001}

Mohs Hardness

7.57-8.5

2 10

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Chemical Composition

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

AlAl₆O₃BSi₃O₁₈

Optical Properties

Luster

Vitreous, Pearly

Vitreous

Pleochroism

visible

Strong; X = deep blue or violet; Y = yellow to red-violet or nearly colorless; Z = colorless or very pale blue

Dispersion

0.040.01

0.005 1

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Transparency

Translucent, Translucent to opaque

Refractive Index

1.578-1.6391.669-1.723

1 3.25

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Optic Character

Crystal System

Orthorhombic

Birefringence

0.037-0.0390.011-0.037

0 0.296

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Clarity

Translucent

Benefits

Physical

Neurological

Enhances mental clarity and focus

Cardiovascular

Respiratory

Good

Reproductive

Digestive

Psychology

Wisdom

Patience

Healing

Physical healing

Emotional healing

Qualities Associated

Harmony

Patience

Grandidierite Vs Dumortierite Fracture

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

Compare Green Gemstones

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Grandidierite Vs Dumortierite Luster

A primary knowledge about Grandidierite vs Dumortierite 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. Dumortierite, on other hand, exhibits Vitreous luster.