Tourmaline

Prehnite

Tourmaline Vs Prehnite

Tourmaline

Prehnite

Add ⊕

1 Astrology

1.1 Origin

Brazil, Madagascar, Zambia, Sri Lanka, Burma, Russia, USA, Afghanistan

Australia, Southern and central Africa, green, brown, Australia, France, green, brown, Australia, France

1.2 Color

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

Green, Colorless, gray, Yellow, White

1.3 Streak

White

Colorless

1.4 For which Rashi?

Libra

1.5 Planet

Venus, Mars

Venus

1.6 Element of Planets

Water

Earth

1.7 How to Wear?

1.7.1 Finger

Not Available

1.7.2 Ring Metal

Not Available

1.8 Energy

Projective

Receptive

1.9 Deities

Venus

Freya

1.10 Not to wear with

Not Available

1.11 Powers

Love, Courage

Not Available

1.12 Birthstone

1.12.1 Planetary

Not Available

1.12.2 Talisman

Not Available

2 Physical Properties

2.1 Tenacity

Not Available

Brittle

2.2 Solubility

Not Available

2.3 Durability

Not Available

2.4 Specific Gravity

2.85-3.352.80-2.95

1 7.18

2.5 Fracture

Uneven, Conchoidal, ConchoidalArthur Thomas, Gemstones (2009)

Uneven, Yellow, White, UnevenWalter Schumann, Gemstones of the world (2001) More from other references, Brittle, Metallic

2.6 Cleavage

Indistinct

Distinct on [001]

2.7 Mohs Hardness

7-7.56-6.5

2 10

2.8 Chemical Composition

Tourmaline is a series of several different minerals with unique chemical formulas. See The chemical formula of Tourmaline for details.

Ca₂Al₂Si₃O₁₂(OH)

3 Optical Properties

3.1 Luster

Vitreous

3.2 Pleochroism

typically moderate to strong

AbsentWalter Schumann

3.3 Dispersion

0.02None

0.007 1

3.4 Transparency

Transparent, Translucent, Transparent to opaque

Translucent

3.5 Refractive Index

1.614-1.6661.611-1.673

1 3.25

3.6 Optic Character

Not Available

3.7 Crystal System

Trigonal

Orthorhombic

3.8 Birefringence

0.014-0.0400.021-0.033

0 0.296

3.9 Clarity

Transparent

TranslucentHerve Nicolas Lazzarelli

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

Tourmaline Vs Prehnite Fracture

Fracture is an important parameter when you compare Tourmaline and Prehnite Physical Properties. It is necessary to understand the significance of these properties, before you compare Tourmaline Vs Prehnite 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 Tourmaline is Conchoidal, ConchoidalArthur Thomas, Gemstones (2009) and Uneven. Prehnite fracture is Brittle, Gemstones of the world (2001) More from other references, Metallic, Uneven, UnevenWalter Schumann, White and Yellow.

Compare Semi Precious Gemstones

Tourmaline Vs Beryl

Tourmaline Vs Citrine

Tourmaline Vs Amethyst

Tourmaline Vs Prehnite Luster

A primary knowledge about Tourmaline vs Prehnite 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. Tourmaline exhibits Vitreous luster. Prehnite, on other hand, exhibits Vitreous luster.