Common Opal

Anhydrite

Common Opal Vs Anhydrite

Common Opal

Anhydrite

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Astrology

Origin

Southern and central Africa

Mexico

Color

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

Colorless, Blue, Violet, White, Brown, rose, gray

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

Durability

Specific Gravity

1.98-2.502.90-2.98

1 7.18

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Fracture

Conchoidal

Cleavage

None

Rare tabular and prismatic crystals. Usually occurs as fibrous, parallel veins that break off into cleavage fragments.

Mohs Hardness

5.5-6.53.5

2 10

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Chemical Composition

SiO 2 · nH 2OWalter Schumann , Gemstones of the world (2001)

CaSO 4Michael OâDonoghue , Gems, Sixth edition (2006) More from other references

Optical Properties

Luster

Pearly, Greasy

Pleochroism

For violet varieties

Dispersion

0.010.01

0.005 1

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Transparency

Translucent

Transparent

Refractive Index

1.37-1.521.570-1.614

1 3.25

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Optic Character

Crystal System

Orthorhombic

Birefringence

-99990.042-0.044

0 0.296

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Clarity

Translucent

Transparent

Benefits

Physical

Neurological

Enhances mental clarity and focus

Cardiovascular

Supports heart health

Respiratory

Good

Reproductive

Digestive

Psychology

Creativity

Calmness

Healing

Emotional healing

Qualities Associated

Creativity

Acceptance

Common Opal Vs Anhydrite Fracture

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

Compare Blue Gemstones

Common Opal Vs Elbaite

Common Opal Vs Falcons Eye

Common Opal Vs Fluorapatite

Common Opal Vs Anhydrite Luster

A primary knowledge about Common Opal vs Anhydrite 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. Anhydrite, on other hand, exhibits Pearly and Greasy luster.