Mottramite

Howlite

Mottramite Vs Howlite

Mottramite

Howlite

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Astrology

Origin

Southern and central Africa

Color

Brown, Green, Yellow

Blue, Colorless, White

Streak

Green, Brownish

White

For which Rashi?

Gemini, Virgo

Planet

Element of Planets

Earth

Energy

How to Wear?

Finger

Ring Metal

Deities

Quan Yin

Not to wear with

Powers

Birthstone

Planetary

Talisman

Physical Properties

Tenacity

Brittle

Solubility

Soluble

Durability

Specific Gravity

5.92.45-2.58

1 7.18

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Fracture

Sub-Conchoidal

Conchoidal

Cleavage

None observed

None

Mohs Hardness

33-3.5

2 10

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Chemical Composition

PbCu(VO4)(OH)

Ca 2B 5SiO 9(OH) 5Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Optical Properties

Luster

Greasy

Vitreous

Pleochroism

Visible X=Y= canary yellow to greenish yellow

Dispersion

0.040.01

0.005 1

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Transparency

Refractive Index

2.1701.583-1.608

1 3.25

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Optic Character

Crystal System

Orthorhombic

monoclinic

Birefringence

0.1500.019

0 0.296

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Clarity

Benefits

Physical

Neurological

Aids in mental clarity and focus

Cardiovascular

Respiratory

Good

Reproductive

Digestive

Psychology

Confidence

Calming

Healing

Emotional healing

Qualities Associated

Transformation

Calming

Mottramite Vs Howlite Fracture

Fracture is an important parameter when you compare Mottramite and Howlite Physical Properties. It is necessary to understand the significance of these properties, before you compare Mottramite Vs Howlite 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 Mottramite is Sub-Conchoidal. Howlite fracture is Conchoidal.

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Mottramite Vs Howlite Luster

A primary knowledge about Mottramite vs Howlite 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. Mottramite exhibits Greasy luster. Howlite, on other hand, exhibits Vitreous luster.