Rock Crystal

Opal

Rock Crystal Vs Opal

Rock Crystal

Opal

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Astrology

Origin

Sri Lanka

Ethiopia

Color

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

Yellow, White, Red, Brown, Blue

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

2.651.98-2.25

1 7.18

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Fracture

ConchoidalWalter Schumann

Conchoidal

Cleavage

None

Mohs Hardness

75-6.5

2 10

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Chemical Composition

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

SiO₂ · nH₂O

Optical Properties

Luster

Vitreous, Pearly

Pleochroism

None

Dispersion

0.010.01

0.005 1

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Transparency

TransparentWalter Schumann

Transparent, Translucent, Transparent to translucent

Refractive Index

1.544-1.5531.37-1.52

1 3.25

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Optic Character

Crystal System

Trigonal

Birefringence

0.009-9999

0 0.296

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Clarity

TransparentWalter Schumann

Transparent

Benefits

Physical

Neurological

Enhances mental clarity and focus

Cardiovascular

Respiratory

Good

Reproductive

Digestive

Psychology

Clarity

Creativity

Healing

Physical healing

Emotional healing

Qualities Associated

Clarity

Creativity

Rock Crystal Vs Opal Fracture

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

Compare Blue Gemstones

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Rock Crystal Vs Opal Luster

A primary knowledge about Rock Crystal vs Opal 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, on other hand, exhibits Vitreous and Pearly luster.