Petalite

Opal

Petalite Vs Opal

Petalite

Opal

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1 Astrology

1.1 Origin

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

Ethiopia

1.2 Color

Colorless, gray, Yellow, White

Yellow, White, Red, Brown, Blue

1.3 Streak

Colorless

White

1.4 For which Rashi?

Not Available

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

1.5 Planet

Not Available

Mercury

1.6 Element of Planets

Not Available

Earth, Air, Water

1.7 How to Wear?

1.7.1 Finger

Not Available

1.7.2 Ring Metal

Not Available

1.8 Energy

Not Available

Projective, Receptive

1.9 Deities

Not Available

Cupid

1.10 Not to wear with

Not Available

1.11 Powers

Not Available

Astral Projection, Psychicism

1.12 Birthstone

1.12.1 Planetary

Not Available

1.12.2 Talisman

Not Available

2 Physical Properties

2.1 Tenacity

Brittle

BrittleWalter Schumann

2.2 Solubility

insoluble

hot salt water

2.3 Durability

Not Available

2.4 Specific Gravity

2.401.98-2.25

1 7.18

2.5 Fracture

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

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

2.6 Cleavage

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

None

2.7 Mohs Hardness

6-6.55-6.5

2 10

2.8 Chemical Composition

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

SiO₂ · nH₂O

3 Optical Properties

3.1 Luster

Vitreous, Pearly

3.2 Pleochroism

AbsentWalter Schumann

None

3.3 Dispersion

0.01None

0.007 1

3.4 Transparency

Gemmological Tables (2004) More from other references

Transparent, Translucent, Transparent to translucent

3.5 Refractive Index

1.502-1.5231.37-1.52

1 3.25

3.6 Optic Character

Not Available

3.7 Crystal System

monoclinic

Trigonal

3.8 Birefringence

0.012-0.016Not Available

0 0.296

3.9 Clarity

TransparentUlrich Henn and Claudio C. Milisenda

Transparent

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

Petalite Vs Opal Fracture

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

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Petalite Vs Opal Luster

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