Origin
USA, Mexico, Brazil, Switzerland, Sri Lanka, Burma, Madagascar, Origins: USA, Germany, Japan
Southern and central Africa
Color
Yellow, Brown, Colorless, White, gray, Brownish
White, Colorless, Blue, Red, Green, Yellow, Violet, Black
Specific Gravity
2.97-3.03
3.03-3.18
Fracture
Uneven, ConchoidalWalter Schumann, Conchoidal
Uneven, Irregular, Conchoidal
Cleavage
{001} Poor
{???} Indistinct
Chemical Composition
CaB 2(SiO 4) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Na(Mg 3)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012)
Luster
Vitreous, Greasy
Vitreous
Pleochroism
Weak: pale yellow yellow
Very strong: pale yellow colorless
Transparency
-
Transparent
Refractive Index
1.627-1.639
1.614-1.666
Optic Character
Biaxial/+
-
Crystal System
Orthorhombic
Trigonal Ditrigonal Pyramidal H-M Symbol (3m) Space Group: R 3m
Birefringence
0.006
0.014-0.032
Clarity
TransparentUlrich Henn and Claudio C. Milisenda
Transparent
Neurological
Enhances mental clarity and focus
-
Cardiovascular
Supports heart health
-
Psychology
Spiritual Awareness
Self-acceptance
Healing
Emotional healing
Emotional healing
Qualities Associated
Spiritual Awakening
Self-Exploration
Danburite Vs Dravite Fracture
Fracture is an important parameter when you compare Danburite and Dravite Physical Properties. It is necessary to understand the significance of these properties, before you compare Danburite 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 Danburite is Uneven, ConchoidalWalter Schumann and Conchoidal. Dravite fracture is Uneven, Irregular and Conchoidal.
Danburite Vs Dravite Luster
A primary knowledge about Danburite 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. Danburite exhibits Vitreous and Greasy luster. Dravite, on other hand, exhibits Vitreous luster.