Origin
Mexico
USA, Mexico, Brazil, Switzerland, Sri Lanka, Burma, Madagascar, Color: colorless, light yellow, light pink, Hardness: 7, Refractive index: 1.63 1.64, Density: 2.98 3.03, Chemical composition: Ca(B2Si2O8), Crystal structure: orthorhombic, Origins: USA, Germany, Japan. Colorless danburites are common, with light pink or yellowish stones being more rare and expensive. Only eye clean pieces are valuable.
Color
White, Colorless, pink, Yellow, Brown
Yellow, Brown, Colorless, White, gray, Brownish
For which Rashi?
Cancer
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Element of Planets
Earth, Sun
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Energy
Receptive
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Finger
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Ring Metal
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Deities
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Not to wear with
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Powers
Spirituality, Healing
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Planetary
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Talisman
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Solubility
Soluble
Not Available
Durability
Not Available
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Specific Gravity
2.67-2.73
2.97-3.03
Fracture
Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), Brittle
Uneven, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references, Conchoidal, Brittle
Cleavage
Perfect on [10 1 1] three directions with angle of 74° 55
{001} Poor
Chemical Composition
CaCO 3Ulrich Henn and Claudio C.
CaB 2(SiO 4) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Luster
Vitreous, Pearly
Vitreous, Greasy
Pleochroism
NilArthur Thomas
Weak: pale yellow yellow
Transparency
Transparent, Translucent
Gemmological Tables (2004) More from other references
Refractive Index
1.486-1.658
1.627-1.639
Optic Character
Not Available
Biaxial/+
Crystal System
Trigonal
Orthorhombic
Birefringence
0.154-0.174
0.006
Clarity
Transparent
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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Calcite Vs Danburite Fracture
Fracture is an important parameter when you compare Calcite and Danburite Physical Properties. It is necessary to understand the significance of these properties, before you compare Calcite Vs Danburite 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 Calcite is Conchoidal, ConchoidalArthur Thomas, Gemstones (2009) and Brittle. Danburite fracture is Uneven, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references, Conchoidal and Brittle.
Calcite Vs Danburite Luster
A primary knowledge about Calcite vs Danburite 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. Calcite exhibits Vitreous and Pearly luster. Danburite, on other hand, exhibits Vitreous and Greasy luster.