Origin
USA, Zambia, Madagascar, India, Sri Lanka, Russia, Australia, Color: violet, purple-violet, Hardness: 7, Refractive index: 1.54 1.55, Density: 2.65 2.66, Chemical composition: SiO2, Crystal structure: hexagonal, Lustre: vitreous, Origins: Widespread; main sources are Brazil, Uruguay, Bolivia, Argentina, USA, East Africa, Zambia, Namibia, Madagascar, India, Sri Lanka, Russia, Brazil, Uruguay, Bolivia, Argentina, Australia, Brazil, Uruguay, Bolivia, Argentina, Australia
  
Burma, Sri Lanka, India, Madagascar, Kenya, Tanzania, Thailand, Cambodia, China, Australia, USA
  
Color
Violet, White, Colorless, Blue, Red, Green, Yellow, pink, Violet, pink
  
Colorless, Yellow, Green, Violet, White, Colorless, Blue, Red, Green, Yellow, pink
  
Streak
White
  
Not Available
  
For which Rashi?
Pisces, Scorpio, Sagittarius, Pisces, Scorpio, Sagittarius, Pisces, Scorpio, Sagittarius
  
Pisces, Taurus, Gemini, Libra, Pisces, Taurus, Gemini, Libra, Pisces, Taurus, Gemini, Libra
  
Planet
Not Available
  
Saturn
  
Element of Planets
Water
  
Water
  
How to Wear?
  
  
Finger
Not Available
  
Not Available
  
Ring Metal
Not Available
  
Not Available
  
Energy
Receptive
  
Receptive
  
Deities
Diana
  
Apollo
  
Not to wear with
Not Available
  
Not Available
  
Powers
Love, Courage
  
Psychic Power, Prosperity
  
Birthstone
  
  
Planetary
Not Available
  
Not Available
  
Talisman
Not Available
  
Not Available
  
Tenacity
Not Available
  
Not Available
  
Solubility
insoluble in common solvents
  
insoluble
  
Durability
Not Available
  
Not Available
  
Specific Gravity
2.65
  
3.95-4.03
  
Fracture
Conchoidal, ConchoidalWalter Schumann, Gemstones of the world (2001)
  
Uneven, Uneven, Gems, Sixth Edition (2006)
  
Cleavage
Indiscernible
  
None, but may exhibit parting
  
Mohs Hardness
7
  
9
  
Chemical Composition
SiO2
  
Al 2 O 3
  
Luster
Vitreous
  
Vitreous, Adamantine, Vitreous, Adamantine
  
Pleochroism
None
  
Strong
  
Transparency
Transparent, Transparent to translucent
  
Transparent, Translucent, Transparent to opaque
  
Refractive Index
1.544-1.553
  
1.762-1.788
  
Optic Character
Not Available
  
Not Available
  
Crystal System
Trigonal
  
Trigonal
  
Birefringence
0.009
  
0.008-0.009
  
Clarity
Transparent
  
Transparent
  
Physical
  
  
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
  
Amethyst Vs Sapphire Luster
A primary knowledge about Amethyst vs Sapphire 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. Amethyst exhibits Vitreous luster. Sapphire, on other hand, exhibits Adamantine, Adamantine, Vitreous and Vitreous luster.