Sillimanite

Apatite

Sillimanite Vs Apatite

Sillimanite

Apatite

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Astrology

Origin

USA, Madagascar, India, Sri Lanka, Burma, Australia, Italy, Brazil

Mexico, USA, Canada, Madagascar, Spain, Russia, Sri Lanka, India, Burma, Origins: Mexico

Color

Blue, Green, Brownish, Greenish, Colorless, gray

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

Streak

White

For which Rashi?

Gemini

Planet

Mercury

Element of Planets

Earth

Energy

How to Wear?

Finger

Ring Metal

Deities

Jupiter/Neptune

Not to wear with

Powers

Healing

Birthstone

Planetary

Talisman

Physical Properties

Tenacity

Tough

Solubility

Durability

Specific Gravity

3.20-3.263.16-3.23

1 7.18

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Fracture

Splintery

Conchoidal, Uneven, Conchoidal to uneven

Cleavage

{010} perfect

[0001] indistinct, [1010] indistinct

Mohs Hardness

6-7.55

2 10

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Chemical Composition

Al 2SiO 5Michael OâDonoghue , Gems, Sixth Edition (2006)

Ca 5(PO 4) 3(F,OH,Cl)Walter Schumann , Gemstones of the world (2001) More from other references

Optical Properties

Luster

Vitreous, Subadamantine, Silky

Vitreous

Pleochroism

Colourless to pale brown to yellow

Blue stones – strong

Dispersion

0.020.01

0.005 1

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Transparency

Transparent, Translucent

Refractive Index

1.653-1.6851.628-1.651

1 3.25

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Optic Character

Crystal System

Orthorhombic

Hexagonal

Birefringence

0.020-0.0220.002-0.008

0 0.296

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Clarity

Transparent

TransparentUlrich Henn and Claudio C. Milisenda

Benefits

Physical

Neurological

Enhances communication and mental clarity

Cardiovascular

Enhances intuition and psychic abilities

Respiratory

Good

Reproductive

Supports reproductive health

Digestive

Supports digestive health

Psychology

Creativity

Motivation

Healing

Emotional healing

Qualities Associated

Creativity

Manifestation

Sillimanite Vs Apatite Fracture

Fracture is an important parameter when you compare Sillimanite and Apatite Physical Properties. It is necessary to understand the significance of these properties, before you compare Sillimanite Vs Apatite 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 Sillimanite is Splintery. Apatite fracture is Conchoidal, Uneven and Conchoidal to uneven.

Compare Blue Gemstones

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Sillimanite Vs Apatite Luster

A primary knowledge about Sillimanite vs Apatite 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. Sillimanite exhibits Vitreous, Subadamantine and Silky luster. Apatite, on other hand, exhibits Vitreous luster.