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Rock Crystal
Rock Crystal

Ettringite
Ettringite



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Rock Crystal
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Ettringite

Rock Crystal Vs Ettringite

Astrology

Origin

Sri Lanka
Southern and central Africa

Color

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

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

-
-

Solubility

-
Partially soluble in water

Durability

-
-

Specific Gravity

2.651.77
1 7.18
👆🏻

Fracture

ConchoidalWalter Schumann
-

Cleavage

None
Perfect on {10 1 0}

Mohs Hardness

72-2.5
2 10
👆🏻

Chemical Composition

SiO 2Walter Schumann , Gemstones of the world (2001)
Ca 6Al 2(SO 4) 3(OH) 12 26H 2OMichael O’Donoghue , Gems, Sixth Edition (2006)

Optical Properties

Luster

-
Vitreous

Pleochroism

-
-

Dispersion

0.010.04
0.005 1
👆🏻

Transparency

TransparentWalter Schumann
Transparent, Translucent

Refractive Index

1.544-1.5531.470-1.491
1 3.25
👆🏻

Optic Character

-
-

Crystal System

-
Trigonal

Birefringence

0.0090.021
0 0.296
👆🏻

Clarity

TransparentWalter Schumann
Transparent

Benefits

Physical

Neurological

-
-

Cardiovascular

-
-

Respiratory

Good
-

Reproductive

-
-

Digestive

-
-

Psychology

Clarity
Adaptability

Healing

Physical healing
Emotional healing

Qualities Associated

Clarity
Balance

Rock Crystal Vs Ettringite Fracture

Fracture is an important parameter when you compare Rock Crystal and Ettringite Physical Properties. It is necessary to understand the significance of these properties, before you compare Rock Crystal Vs Ettringite 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 Rock Crystal is ConchoidalWalter Schumann.

Rock Crystal Vs Ettringite Luster

A primary knowledge about Rock Crystal vs Ettringite 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. Ettringite, on other hand, exhibits Vitreous luster.