Opal

Petalite

Opal Vs Petalite

Opal

Petalite

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1 Astrology

1.1 Origin

Ethiopia

Canada, USA, Brazil, Italy, Mozambique, Zimbabwe, Russia, Burma, Australia

1.2 Color

Yellow, White, Red, Brown, Blue

Colorless, gray, Yellow, White

1.3 Streak

White

Colorless

1.4 For which Rashi?

Cancer, Libra, Scorpio, Cancer, Libra, Scorpio, Cancer, Libra, Scorpio

Not Available

1.5 Planet

Mercury

Not Available

1.6 Element of Planets

Earth, Air, Water

Not Available

1.7 How to Wear?

1.7.1 Finger

Not Available

1.7.2 Ring Metal

Not Available

1.8 Energy

Projective, Receptive

Not Available

1.9 Deities

Cupid

Not Available

1.10 Not to wear with

Not Available

1.11 Powers

Astral Projection, Psychicism

Not Available

1.12 Birthstone

1.12.1 Planetary

Not Available

1.12.2 Talisman

Not Available

2 Physical Properties

2.1 Tenacity

BrittleWalter Schumann

Brittle

2.2 Solubility

hot salt water

insoluble

2.3 Durability

Not Available

2.4 Specific Gravity

1.98-2.252.40

1 7.18

2.5 Fracture

Conchoidal, Conchoidal, Gemstones of the world (2001) More from other references, Brittle

Subconchoidal, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references, Brittle, Conchoidal

2.6 Cleavage

None

Perfect on {001}, poor on {201} with 38.5° angle between the two

2.7 Mohs Hardness

5-6.56-6.5

2 10

2.8 Chemical Composition

SiO₂ · nH₂O

LiAlSi 4O 10Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

3 Optical Properties

3.1 Luster

Vitreous, Pearly

3.2 Pleochroism

None

AbsentWalter Schumann

3.3 Dispersion

None0.01

0.007 1

3.4 Transparency

Transparent, Translucent, Transparent to translucent

Gemmological Tables (2004) More from other references

3.5 Refractive Index

1.37-1.521.502-1.523

1 3.25

3.6 Optic Character

Not Available

3.7 Crystal System

Trigonal

monoclinic

3.8 Birefringence

Not Available0.012-0.016

0 0.296

3.9 Clarity

Transparent

TransparentUlrich Henn and Claudio C. Milisenda

4 Benefits

4.1 Physical

4.1.1 Neurological

Not Available

4.1.2 Cardiovascular

Not Available

4.1.3 Respiratory

Not Available

4.1.4 Reproductive

Not Available

4.1.5 Digestive

Not Available

4.2 Psychology

Not Available

4.3 Healing

Not Available

4.4 Qualities Associated

Not Available

Opal Vs Petalite Fracture

Fracture is an important parameter when you compare Opal and Petalite Physical Properties. It is necessary to understand the significance of these properties, before you compare Opal Vs Petalite 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 Brittle, Conchoidal, Conchoidal and Gemstones of the world (2001) More from other references. Petalite fracture is Brittle, Conchoidal, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references and Subconchoidal.

Compare Semi Precious Gemstones

Opal Vs Alexandrite

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Opal Vs Petalite Luster

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