Origin
Mexico, USA, Canada, Madagascar, Spain, Russia, Sri Lanka, India, Burma, Color: green, greenish yellow, blue, violet, Hardness: 5, Refractive index: 1.60 1.67, Density: 3.17 3.35, Chemical composition: Phosphate composition, Crystal structure: hexagonal, Lustre: vitreous, Origins: Mexico, brown, green, Yellow
Brazil, Colombia, Southern and central Africa
Color
Yellow, Green, Blue, White, Red, Colorless, Violet, pink, Brown
Greenish, Blue, Colorless, White, Green
For which Rashi?
Gemini
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Planet
Mercury
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Element of Planets
Earth
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Energy
Projective
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Finger
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Ring Metal
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Deities
Jupiter/Neptune
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Not to wear with
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Powers
Healing
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Planetary
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Talisman
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Tenacity
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Solubility
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Durability
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Specific Gravity
3.16-3.23
3.08-3.12
Fracture
Conchoidal, Uneven, Brittle, ConchoidalArthur Thomas, Gemstones (2009), Conchoidal to uneven
ConchoidalWalter Schumann, Gemstones of the world (2001), Brittle, Metallic
Cleavage
[0001] indistinct, [1010] indistinct
{010} Perfect
Chemical Composition
Ca 5(PO 4) 3(F,OH,Cl)Walter Schumann , Gemstones of the world (2001) More from other references
BeAlSiO 4(OH)Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Pleochroism
Blue stones – strong
Weak: colorless-(greenish) yellow
Transparency
Gemmological Tables (2004) More from other references
Gemmological Tables (2004) More from other references
Refractive Index
1.628-1.651
1.650-1.677
Optic Character
Not Available
Not Available
Crystal System
Hexagonal
Monoclinic Prismatic H-M Symbol (2/m) Space Group: P 21/a
Birefringence
0.002-0.008
0.019-0.025
Clarity
TransparentUlrich Henn and Claudio C. Milisenda
TransparentUlrich Henn and Claudio C. Milisenda
Neurological
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Cardiovascular
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Respiratory
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Reproductive
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Digestive
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Psychology
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Healing
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Qualities Associated
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Apatite Vs Euclase Fracture
Fracture is an important parameter when you compare Apatite and Euclase Physical Properties. It is necessary to understand the significance of these properties, before you compare Apatite Vs Euclase 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 Apatite is Conchoidal, Uneven, Brittle, ConchoidalArthur Thomas, Gemstones (2009) and Conchoidal to uneven. Euclase fracture is ConchoidalWalter Schumann, Gemstones of the world (2001), Brittle and Metallic.
Apatite Vs Euclase Luster
A primary knowledge about Apatite vs Euclase 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. Apatite exhibits Vitreous luster. Euclase, on other hand, exhibits Vitreous luster.