Alunite

Siderite

Alunite Vs Siderite

Alunite

Siderite

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Astrology

Origin

Australia, Italy

Brazil

Color

Yellow, Red, Reddish, Brown, Colorless, White, gray

Yellow, Brown, gray, Greenish

Streak

White

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

Brittle

Solubility

Soluble

Durability

Specific Gravity

2.6-2.93.83-3.89

1 7.18

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Fracture

Conchoidal, Uneven

Uneven, Conchoidal

Cleavage

On {0001}, perfect

Perfect on {01 1 1}

Mohs Hardness

3.5-43.5-4.5

2 10

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Chemical Composition

KAl3(SO4)2(OH)6

Fe2+ CO 3Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Optical Properties

Luster

Vitreous, Pearly

Pearly

Pleochroism

Dispersion

0.020.04

0.005 1

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Transparency

Transparent, Translucent

Refractive Index

1.5721.633-1.875

1 3.25

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Optic Character

Crystal System

Trigonal

Birefringence

0.0200.242

0 0.296

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Clarity

Transparent

Benefits

Physical

Neurological

Cardiovascular

Respiratory

Good

Reproductive

Digestive

Psychology

Stability

Confidence

Healing

Emotional healing

Qualities Associated

Stability

Grounding

Alunite Vs Siderite Fracture

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

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Alunite Vs Siderite Luster

A primary knowledge about Alunite vs Siderite 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. Alunite exhibits Vitreous and Pearly luster. Siderite, on other hand, exhibits Pearly luster.