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Lapis lazuli
Lapis lazuli

Malachite
Malachite



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Lapis lazuli
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Malachite

Lapis lazuli Vs Malachite

1 Astrology
1.1 Origin
Afghanistan
Southern and central Africa, green
1.2 Color
Violet, Blue, White
Green
1.3 Streak
Blue
Green
1.4 For which Rashi?
Sagittarius
Capricorn, Scorpio, Capricorn, Scorpio, Capricorn, Scorpio
1.5 Planet
Venus
Venus
1.6 Element of Planets
Water
Earth
1.7 How to Wear?
1.7.1 Finger
Not Available
Not Available
1.7.2 Ring Metal
Not Available
Not Available
1.8 Energy
Receptive
Receptive
1.9 Deities
Venus
Freyja
1.10 Not to wear with
Not Available
Not Available
1.11 Powers
Protection, Courage
Protection
1.12 Birthstone
1.12.1 Planetary
Not Available
Not Available
1.12.2 Talisman
Not Available
Not Available
2 Physical Properties
2.1 Tenacity
Not Available
Not Available
2.2 Solubility
Not Available
Not Available
2.3 Durability
Not Available
Not Available
2.4 Specific Gravity
2.50-3.00
3.25-4.10
2.5 Fracture
Uneven-Conchoidal, ConchoidalWalter Schumann, Gemstones of the world (2001)
Conchoidal, Conchoidal, Gemstones (2009), Uneven
2.6 Cleavage
3,6
Perfect on { 2 01} fair on {010}
2.7 Mohs Hardness
5.5
3.5-4
2.8 Chemical Composition
The chief constituent Lapis Lazuli is Lazurite, with the following chemical formula: (Na,Ca)8Al6Si6O24(S,SO)4
Cu2CO3(OH)2
3 Optical Properties
3.1 Luster
Vitreous, Greasy
Adamantine, Vitreous, Silky, Fibrous
3.2 Pleochroism
AbsentWalter Schumann
Not Available
3.3 Dispersion
Albite
None
Rank: N/A (Overall)
None
Rank: N/A (Overall)
Fluorite
ADD ⊕
3.4 Transparency
Opaque
Opaque
3.5 Refractive Index
1.500-1.670
1.655-1.909
3.6 Optic Character
Not Available
Not Available
3.7 Crystal System
Trigonal
monoclinic
3.8 Birefringence
Not Available
0.254
3.9 Clarity
Gemstones of the world (2001)
Gemmological Tables (2004) More from other references
4 Benefits
4.1 Physical
4.1.1 Neurological
Not Available
Not Available
4.1.2 Cardiovascular
Not Available
Not Available
4.1.3 Respiratory
Not Available
Not Available
4.1.4 Reproductive
Not Available
Not Available
4.1.5 Digestive
Not Available
Not Available
4.2 Psychology
Not Available
Not Available
4.3 Healing
Not Available
Not Available
4.4 Qualities Associated
Not Available
Not Available

Lapis lazuli Vs Malachite Fracture

Fracture is an important parameter when you compare Lapis lazuli and Malachite Physical Properties. It is necessary to understand the significance of these properties, before you compare Lapis lazuli Vs Malachite 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 Lapis lazuli is ConchoidalWalter Schumann, Gemstones of the world (2001) and Uneven-Conchoidal. Malachite fracture is Conchoidal, Conchoidal, Gemstones (2009) and Uneven.

Lapis lazuli Vs Malachite Luster

A primary knowledge about Lapis lazuli vs Malachite 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. Lapis lazuli exhibits Greasy and Vitreous luster. Malachite, on other hand, exhibits Adamantine, Fibrous, Silky and Vitreous luster.