Spinel Vs Astrophyllite
Origin
Brazil, USA, Madagascar, Sri Lanka, Burma, Thailand, Cambodia, Afghanistan, Russia
Canada, Russia
Color
Blue, Violet, Colorless, Red, Green, Brown
Brown, Yellow, Greenish, Brownish, Red
Streak
White
Brown, White
For which Rashi?
Sagittarius, Scorpio
-
Specific Gravity
3.64-3.66
3.2-3.4
Fracture
Conchoidal, Uneven
Uneven
Cleavage
None, but may exhibit slight parting
Perfect on [001] imperfect on [100]
Chemical Composition
MgAl2O4
(K,Na) 3(Fe2+ ,Mn) 7Ti 2Si 8O 24(O,OH) 7Anthony et al , Handbook of mineralogy (2001)
Luster
Vitreous
Greasy, Pearly
Pleochroism
Absent
Strong: X= deep red-orange Y= orange-yellow Z= lemon-yellow
Transparency
Transparent, Translucent, Transparent to translucent
Translucent
Refractive Index
1.73
1.678-1.758
Crystal System
Isometric
Triclinic
Birefringence
-9999
0.050
Clarity
TransparentUlrich Henn and Claudio C. Milisenda
Translucent
Neurological
-
Enhances mental clarity and focus
Cardiovascular
-
Supports heart health
Respiratory
Good
Excellent
Psychology
Revitalization
Self-Reflection
Healing
Emotional healing
Spiritual healing
Qualities Associated
Vitality
Self-Reflection
Spinel Vs Astrophyllite Fracture
Fracture is an important parameter when you compare Spinel and Astrophyllite Physical Properties. It is necessary to understand the significance of these properties, before you compare Spinel Vs Astrophyllite 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 Spinel is Conchoidal and Uneven. Astrophyllite fracture is Uneven.
Spinel Vs Astrophyllite Luster
A primary knowledge about Spinel vs Astrophyllite 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. Spinel exhibits Vitreous luster. Astrophyllite, on other hand, exhibits Greasy and Pearly luster.