Dumortierite

Grossular

Dumortierite Vs Grossular

Dumortierite

Grossular

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Astrology

Origin

Southern and central Africa

Sri Lanka, India, Brazil

Color

Blue, Violet, Brown, White, Greenish, pink

Green, Brown, Colorless, gray, Yellow

Streak

White

Brownish, 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

3.26-3.413.55-3.73

1 7.18

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Fracture

Fibrous, ConchoidalWalter Schumann

Conchoidal, Uneven

Cleavage

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

none

Mohs Hardness

7-8.57-7.5

2 10

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Chemical Composition

AlAl₆O₃BSi₃O₁₈

Ca 3Al 2(SiO 4) 3Arthur Thomas , Gemstones (2009)

Optical Properties

Luster

Vitreous

Greasy, Vitreous

Pleochroism

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

None

Dispersion

0.010.02

0.005 1

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Transparency

Translucent, Translucent to opaque

Refractive Index

1.669-1.7231.730-1.760

1 3.25

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Optic Character

Crystal System

Orthorhombic

cubic

Birefringence

0.011-0.0370.020

0 0.296

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Clarity

Translucent

TransparentUlrich Henn and Claudio C. Milisenda

Benefits

Physical

Neurological

Enhances mental clarity and focus

Cardiovascular

Respiratory

Good

Reproductive

Helps in digestion and alleviates indigestion

Digestive

Psychology

Patience

Abundance

Healing

Emotional healing

Physical healing

Qualities Associated

Patience

Abundance

Dumortierite Vs Grossular Fracture

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

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Dumortierite Vs Grossular Luster

A primary knowledge about Dumortierite vs Grossular 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. Dumortierite exhibits Vitreous luster. Grossular, on other hand, exhibits Greasy and Vitreous luster.