Andalusite

Opal

Andalusite Vs Opal

Andalusite

Opal

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Astrology

Origin

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

Ethiopia

Color

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

Yellow, White, Red, Brown, Blue

Streak

White

For which Rashi?

Cancer, Libra, Scorpio

Planet

Venus

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

3.05-3.211.98-2.25

1 7.18

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Fracture

Uneven, Subconchoidal, Splintery

Conchoidal

Cleavage

Good on {110}, poor on {100}

None

Mohs Hardness

7.55-6.5

2 10

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Chemical Composition

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

SiO₂ · nH₂O

Optical Properties

Luster

Vitreous, Greasy

Vitreous, Pearly

Pleochroism

strongly trichroic

None

Dispersion

0.020.01

0.005 1

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Transparency

Transparent, Translucent

Transparent, Translucent, Transparent to translucent

Refractive Index

1.627-1.6501.37-1.52

1 3.25

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Optic Character

Crystal System

Orthorhombic

Trigonal

Birefringence

0.009-0.010-9999

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

Perception

Creativity

Healing

Physical healing

Emotional healing

Qualities Associated

Self-Realization

Creativity

Andalusite Vs Opal Fracture

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

Compare Brown Gemstones

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Andalusite Vs Opal Luster

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