Iolite Vs Londonite
Origin
Brazil, USA, Canada, Madagascar, Sri Lanka, India, Burma
Madagascar
Color
Blue, Violet, Blue, Yellow, Grey
White, Colorless, Yellow
Streak
Not Available
White
For which Rashi?
Libra, Sagittarius, Taurus, Libra, Sagittarius, Taurus, Libra, Sagittarius, Taurus
Not Available
Planet
Jupiter
Not Available
Element of Planets
Water
Not Available
Energy
Receptive
Not Available
Finger
Not Available
Not Available
Ring Metal
Not Available
Not Available
Deities
Goddess
Not Available
Not to wear with
Not Available
Not Available
Powers
Not Available
Not Available
Planetary
Not Available
Not Available
Talisman
Not Available
Not Available
Tenacity
Not Available
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
2.6-2.7
3.34
Fracture
Not Available
ConchoidalAnthony et al, Handbook of mineralogy (2001), ConchoidalAnthony et al, Handbook of mineralogy (2001), Brittle, Conchoidal
Mohs Hardness
7-7.5
Not Available
Chemical Composition
Mg2Al4Si5O18
(Cs,K,Rb)Al 4Be 4(B,Be) 12O 28Anthony et al , Handbook of mineralogy (2001)
Pleochroism
Not Available
Not Available
Dispersion
Not Available
Not Available
Transparency
Transparent, Translucent, Transparent to translucent
Transparent
Refractive Index
1.52-1.56
Not Available
Optic Character
Not Available
Not Available
Crystal System
Orthorhombic
Not Available
Birefringence
Not Available
Not Available
Clarity
Transparent to translucent
Transparent
Neurological
Not Available
Not Available
Cardiovascular
Not Available
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Respiratory
Not Available
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Reproductive
Not Available
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Digestive
Not Available
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Psychology
Not Available
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Healing
Not Available
Not Available
Qualities Associated
Not Available
Not Available
Iolite Vs Londonite Fracture
Fracture is an important parameter when you compare Iolite and Londonite Physical Properties. It is necessary to understand the significance of these properties, before you compare Iolite Vs Londonite 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. Londonite fracture is ConchoidalAnthony et al, Handbook of mineralogy (2001), ConchoidalAnthony et al, Handbook of mineralogy (2001), Brittle and Conchoidal.
Iolite Vs Londonite Luster
A primary knowledge about Iolite vs Londonite 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. Iolite exhibits Vitreous luster. Londonite, on other hand, exhibits Vitreous luster.
