Dumortierite Vs Antigorite
Origin
Southern and central Africa
Italy
Color
Blue, Violet, Brown, White, Greenish, pink
Green, gray, Brown, Black
Streak
White
Greenish, White
For which Rashi?
Leo, Sagittarius
-
Element of Planets
Water
-
Specific Gravity
3.26-3.41
2.58-2.80
Fracture
Fibrous, ConchoidalWalter Schumann
Conchoidal
Cleavage
Distinct on {100}, poor on {110}; parting on {001}
{001} Good
Mohs Hardness
7-8.5
5-5.5
Chemical Composition
AlAl6O3BSi3O18
(Mg,Fe2+ ) 3Si 2O 5(OH) 4Anthony et al , Handbook of mineralogy (2001)
Luster
Vitreous
Waxy, Silky, Resinous, Greasy
Pleochroism
Strong; X = deep blue or violet; Y = yellow to red-violet or nearly colorless; Z = colorless or very pale blue
pale greenish yellow
Transparency
Translucent, Translucent to opaque
Translucent
Refractive Index
1.669-1.723
1.530-1.575
Crystal System
Orthorhombic
Monoclinic Domatic H-M Symbol (m) Space Group: Cm
Birefringence
0.011-0.037
-9999
Clarity
Translucent
Translucent
Neurological
Enhances mental clarity and focus
Supports neurological health
Cardiovascular
-
Supports heart health
Psychology
Patience
Harmony
Healing
Emotional healing
Emotional healing
Qualities Associated
Patience
Emotional Healing
Dumortierite Vs Antigorite Fracture
Fracture is an important parameter when you compare Dumortierite and Antigorite Physical Properties. It is necessary to understand the significance of these properties, before you compare Dumortierite Vs Antigorite 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 Dumortierite is Fibrous and ConchoidalWalter Schumann. Antigorite fracture is Conchoidal.
Dumortierite Vs Antigorite Luster
A primary knowledge about Dumortierite vs Antigorite 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. Dumortierite exhibits Vitreous luster. Antigorite, on other hand, exhibits Waxy, Silky, Resinous and Greasy luster.