Pearl Vs Howlite
Origin
Australia
Southern and central Africa
Color
Green, Blue
Blue, Colorless, White
For which Rashi?
Cancer, Gemini, Cancer, Gemini, Cancer, Gemini
Gemini, Virgo, Gemini, Virgo, Gemini, Virgo
Element of Planets
Water
Earth
Energy
Receptive
Not Available
Finger
Not Available
Not Available
Ring Metal
Not Available
Not Available
Not to wear with
Not Available
Not Available
Powers
Protection, Love, Money
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
2.60-2.85
2.45-2.58
Fracture
Gemstones of the world (2001), UnevenWalter Schumann, Gemstones of the world (2001)
UnevenArthur Thomas, Gemstones (2009), UnevenArthur Thomas, Gemstones (2009), Brittle, Conchoidal
Mohs Hardness
2.5-4.5
3-3.5
Chemical Composition
Not Available
Ca 2B 5SiO 9(OH) 5Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Pleochroism
AbsentWalter Schumann
NilArthur Thomas
Dispersion
None
Not Available
Transparency
Translucent, Opaque
Gemmological Tables (2004) More from other references
Refractive Index
1.52-1.66
1.583-1.608
Optic Character
Not Available
Not Available
Crystal System
Orthorhombic
monoclinic
Birefringence
0.156
0.019
Clarity
Translucent
Gemmological Tables (2004) More from other references
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
Pearl Vs Howlite Fracture
Fracture is an important parameter when you compare Pearl and Howlite Physical Properties. It is necessary to understand the significance of these properties, before you compare Pearl Vs Howlite 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 Pearl is Gemstones of the world (2001), UnevenWalter Schumann and Gemstones of the world (2001). Howlite fracture is UnevenArthur Thomas, Gemstones (2009), UnevenArthur Thomas, Gemstones (2009), Brittle and Conchoidal.
Pearl Vs Howlite Luster
A primary knowledge about Pearl vs Howlite 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. Pearl exhibits Pearly luster. Howlite, on other hand, exhibits Vitreous luster.
