Iolite Vs Lapis lazuli
Origin
Brazil, USA, Canada, Madagascar, Sri Lanka, India, Burma
Afghanistan
Color
Blue, Violet, Blue, Yellow, Grey
Violet, Blue, White
Streak
Not Available
Blue
For which Rashi?
Libra, Sagittarius, Taurus, Libra, Sagittarius, Taurus, Libra, Sagittarius, Taurus
Sagittarius
Element of Planets
Water
Water
Finger
Not Available
Not Available
Ring Metal
Not Available
Not Available
Energy
Receptive
Receptive
Not to wear with
Not Available
Not Available
Powers
Not Available
Protection, Courage
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
2.50-3.00
Fracture
Not Available
Uneven-Conchoidal, ConchoidalWalter Schumann, Gemstones of the world (2001)
Chemical Composition
Mg2Al4Si5O18
The chief constituent Lapis Lazuli is Lazurite, with the following chemical formula: (Na,Ca)8Al6Si6O24(S,SO)4
Luster
Vitreous
Vitreous, Greasy
Pleochroism
Not Available
AbsentWalter Schumann
Dispersion
Not Available
None
Transparency
Transparent, Translucent, Transparent to translucent
Opaque
Refractive Index
1.52-1.56
1.500-1.670
Optic Character
Not Available
Not Available
Crystal System
Orthorhombic
Trigonal
Birefringence
Not Available
Not Available
Clarity
Transparent to translucent
Gemstones of the world (2001)
Neurological
Not Available
Not Available
Cardiovascular
Not Available
Not Available
Respiratory
Not Available
Not Available
Reproductive
Not Available
Not Available
Digestive
Not Available
Not Available
Psychology
Not Available
Not Available
Healing
Not Available
Not Available
Qualities Associated
Not Available
Not Available
Iolite Vs Lapis lazuli Fracture
Fracture is an important parameter when you compare Iolite and Lapis lazuli Physical Properties. It is necessary to understand the significance of these properties, before you compare Iolite Vs Lapis lazuli 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. Lapis lazuli fracture is ConchoidalWalter Schumann, Gemstones of the world (2001) and Uneven-Conchoidal.
Iolite Vs Lapis lazuli Luster
A primary knowledge about Iolite vs Lapis lazuli 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. Lapis lazuli, on other hand, exhibits Greasy and Vitreous luster.