Common Opal

Grossular

Common Opal Vs Grossular

Common Opal

Grossular

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Astrology

Origin

Southern and central Africa

Sri Lanka, India, Brazil

Color

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

Green, Brown, Colorless, gray, Yellow

Streak

Brownish, 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

Durability

Specific Gravity

1.98-2.503.55-3.73

1 7.18

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Fracture

Conchoidal

Conchoidal, Uneven

Cleavage

None

none

Mohs Hardness

5.5-6.57-7.5

2 10

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Chemical Composition

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

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

Optical Properties

Luster

Greasy, Vitreous

Pleochroism

None

Dispersion

0.010.02

0.005 1

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Transparency

Translucent

Refractive Index

1.37-1.521.730-1.760

1 3.25

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Optic Character

Crystal System

cubic

Birefringence

-99990.020

0 0.296

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Clarity

Translucent

TransparentUlrich Henn and Claudio C. Milisenda

Benefits

Physical

Neurological

Cardiovascular

Respiratory

Good

Reproductive

Helps in digestion and alleviates indigestion

Digestive

Psychology

Creativity

Abundance

Healing

Emotional healing

Physical healing

Qualities Associated

Creativity

Abundance

Common Opal Vs Grossular Fracture

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

Compare Blue Gemstones

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Common Opal Vs Grossular Luster

A primary knowledge about Common Opal 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. Grossular, on other hand, exhibits Greasy and Vitreous luster.