Sard Vs Dravite
Origin
Southern and central Africa
Southern and central Africa
Color
White, Colorless, Blue, Red, Green, Yellow, Violet
White, Colorless, Blue, Red, Green, Yellow, Violet, Black
Streak
Not Available
Colorless
For which Rashi?
Not Available
Not Available
Planet
Not Available
Not Available
Element of Planets
Not Available
Not Available
Energy
Not Available
Not Available
Finger
Not Available
Not Available
Ring Metal
Not Available
Not Available
Deities
Not Available
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
2.58-2.63
3.03-3.18
Fracture
ConchoidalArthur Thomas, Gemstones (2009)
Uneven, Irregular, ConchoidalAnthony et al, Handbook of mineralogy (2001), Conchoidal, Brittle
Cleavage
Not Available
{???} Indistinct
Mohs Hardness
6.5-7
7-7.5
Chemical Composition
SiO 2Ulrich Henn and Claudio C.
Na(Mg 3)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012)
Pleochroism
AbsentWalter Schumann
Very strong: pale yellow colorless
Transparency
Translucent
Transparent
Refractive Index
1.535-1.539
1.614-1.666
Optic Character
Not Available
Not Available
Crystal System
Not Available
Trigonal Ditrigonal Pyramidal H-M Symbol (3m) Space Group: R 3m
Birefringence
0.008-0.010
0.014-0.032
Clarity
Translucent
Transparent
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
Sard Vs Dravite Fracture
Fracture is an important parameter when you compare Sard and Dravite Physical Properties. It is necessary to understand the significance of these properties, before you compare Sard Vs Dravite 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 Sard is ConchoidalArthur Thomas and Gemstones (2009). Dravite fracture is Uneven, Irregular, ConchoidalAnthony et al, Handbook of mineralogy (2001), Conchoidal and Brittle.
Sard Vs Dravite Luster
A primary knowledge about Sard vs Dravite 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. Sard exhibits Waxy luster. Dravite, on other hand, exhibits Vitreous luster.
