Opal

Rock Crystal

Opal Vs Rock Crystal

Opal

Rock Crystal

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Astrology

Origin

Ethiopia

Sri Lanka

Color

Yellow, White, Red, Brown, Blue

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

Streak

White

For which Rashi?

Cancer, Libra, Scorpio

Planet

Mercury

Element of Planets

Earth, Air, Water

Energy

How to Wear?

Finger

Ring Metal

Deities

Cupid

Not to wear with

Powers

Astral Projection, Psychicism

Birthstone

Planetary

Talisman

Physical Properties

Tenacity

BrittleWalter Schumann

Solubility

hot salt water

Durability

Specific Gravity

1.98-2.252.65

1 7.18

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Fracture

Conchoidal

ConchoidalWalter Schumann

Cleavage

None

Mohs Hardness

5-6.57

2 10

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Chemical Composition

SiO₂ · nH₂O

SiO 2Walter Schumann , Gemstones of the world (2001)

Optical Properties

Luster

Vitreous, Pearly

Pleochroism

None

Dispersion

0.010.01

0.005 1

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Transparency

Transparent, Translucent, Transparent to translucent

TransparentWalter Schumann

Refractive Index

1.37-1.521.544-1.553

1 3.25

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Optic Character

Crystal System

Trigonal

Birefringence

-99990.009

0 0.296

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Clarity

Transparent

TransparentWalter Schumann

Benefits

Physical

Neurological

Enhances mental clarity and focus

Cardiovascular

Respiratory

Good

Reproductive

Digestive

Psychology

Creativity

Clarity

Healing

Emotional healing

Physical healing

Qualities Associated

Creativity

Clarity

Opal Vs Rock Crystal Fracture

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

Compare Semi Precious Gemstones

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Opal Vs Simpsonite

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Opal Vs Rock Crystal Luster

A primary knowledge about Opal vs Rock Crystal 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. Opal exhibits Vitreous and Pearly luster.