Origin
Brazil, USA, Canada, Madagascar, Sri Lanka, India, Burma
Brazil, USA, Madagascar, Sri Lanka, Burma, Thailand, Cambodia, Afghanistan, Russia
Color
Blue, Violet, Blue, Yellow, Grey
Blue, Violet, Colorless, Red, Green, Brown
Streak
Not Available
White
For which Rashi?
Libra, Sagittarius, Taurus, Libra, Sagittarius, Taurus, Libra, Sagittarius, Taurus
Sagittarius, Scorpio, Sagittarius, Scorpio, Sagittarius, Scorpio
Element of Planets
Water
Not Available
Finger
Not Available
Not Available
Ring Metal
Not Available
Not Available
Energy
Receptive
Projective
Deities
Goddess
Hephaestus
Not to wear with
Not Available
Not Available
Powers
Not Available
Money
Planetary
Not Available
Not Available
Talisman
Not Available
Not Available
Tenacity
Not Available
Not Available
Solubility
Not Available
none
Durability
Not Available
Not Available
Specific Gravity
2.6-2.7
3.64-3.66
Fracture
Not Available
Conchoidal, Uneven, ConchoidalArthur Thomas, Gemstones (2009)
Cleavage
3,1
None, but may exhibit slight parting
Chemical Composition
Mg2Al4Si5O18
MgAl2O4
Pleochroism
Not Available
Absent
Transparency
Transparent, Translucent, Transparent to translucent
Transparent, Translucent, Transparent to translucent
Refractive Index
1.52-1.56
1.73
Optic Character
Not Available
Not Available
Crystal System
Orthorhombic
Isometric
Birefringence
Not Available
Not Available
Clarity
Transparent to translucent
TransparentUlrich Henn and Claudio C. Milisenda
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 Spinel Fracture
Fracture is an important parameter when you compare Iolite and Spinel Physical Properties. It is necessary to understand the significance of these properties, before you compare Iolite Vs Spinel 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. Spinel fracture is Conchoidal, ConchoidalArthur Thomas, Gemstones (2009) and Uneven.
Iolite Vs Spinel Luster
A primary knowledge about Iolite vs Spinel 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. Spinel, on other hand, exhibits Vitreous luster.