Petalite

Sard

Petalite Vs Sard

Petalite

Sard

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Astrology

Origin

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

Southern and central Africa

Color

Colorless, gray, Yellow, White

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

Streak

Colorless

For which Rashi?

Planet

Element of Planets

Energy

How to Wear?

Finger

Ring Metal

Deities

Not to wear with

Powers

Birthstone

Planetary

Talisman

Physical Properties

Tenacity

Brittle

Solubility

insoluble

Durability

Specific Gravity

2.402.58-2.63

1 7.18

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Fracture

Subconchoidal, ConchoidalWalter Schumann, Conchoidal

Conchoidal

Cleavage

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

None

Mohs Hardness

6-6.56.5-7

2 10

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Chemical Composition

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

SiO 2Ulrich Henn and Claudio C.

Optical Properties

Luster

Vitreous, Pearly

Waxy

Pleochroism

Dispersion

0.010.01

0.005 1

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Transparency

Translucent

Refractive Index

1.502-1.5231.535-1.539

1 3.25

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Optic Character

Crystal System

monoclinic

Birefringence

0.012-0.0160.008-0.010

0 0.296

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Clarity

TransparentUlrich Henn and Claudio C. Milisenda

Translucent

Benefits

Physical

Neurological

Cardiovascular

Respiratory

Good

Reproductive

Digestive

Psychology

Calmness

Strength

Healing

Emotional healing

Qualities Associated

Peace

Protection

Petalite Vs Sard Fracture

Fracture is an important parameter when you compare Petalite and Sard Physical Properties. It is necessary to understand the significance of these properties, before you compare Petalite Vs Sard 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 Subconchoidal, ConchoidalWalter Schumann and Conchoidal. Sard fracture is Conchoidal.

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Petalite Vs Sard Luster

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