Opal

Andalusite

Opal Vs Andalusite

Opal

Andalusite

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Astrology

Origin

Ethiopia

Spain, Brazil, USA, Sri Lanka, Burma, Origins: Spain, Burma. Discovered in Andalusia (Spain)

Color

Yellow, White, Red, Brown, Blue

Brown, pink, Violet, Yellow, Green, White, gray, Colorless, Red

Streak

White

For which Rashi?

Cancer, Libra, Scorpio

Planet

Mercury

Venus

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

1.98-2.253.05-3.21

1 7.18

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Fracture

Conchoidal

Uneven, Subconchoidal, Splintery

Cleavage

None

Good on {110}, poor on {100}

Mohs Hardness

5-6.57.5

2 10

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Chemical Composition

SiO₂ · nH₂O

Al 2SiO 5Michael OâDonoghue , Gems, Sixth edition (2006) More from other references

Optical Properties

Luster

Vitreous, Pearly

Vitreous, Greasy

Pleochroism

None

strongly trichroic

Dispersion

0.010.02

0.005 1

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Transparency

Transparent, Translucent, Transparent to translucent

Transparent, Translucent

Refractive Index

1.37-1.521.627-1.650

1 3.25

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Optic Character

Crystal System

Trigonal

Orthorhombic

Birefringence

-99990.009-0.010

0 0.296

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Clarity

Transparent

Benefits

Physical

Neurological

Enhances mental clarity and focus

Cardiovascular

Supports heart health

Respiratory

Excellent

Reproductive

Digestive

Psychology

Creativity

Perception

Healing

Emotional healing

Physical healing

Qualities Associated

Creativity

Self-Realization

Opal Vs Andalusite Fracture

Fracture is an important parameter when you compare Opal and Andalusite Physical Properties. It is necessary to understand the significance of these properties, before you compare Opal Vs Andalusite 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. Andalusite fracture is Uneven, Subconchoidal and Splintery.

Compare Semi Precious Gemstones

Opal Vs Schorlomite

Opal Vs Simpsonite

Opal Vs Spessartine

Opal Vs Andalusite Luster

A primary knowledge about Opal vs Andalusite 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. Andalusite, on other hand, exhibits Vitreous and Greasy luster.