Bertrandite Vs Lazulite
Origin
Southern and central Africa
Brazil, Southern and central Africa
Color
Colorless, Yellow
Blue, Green, Black
For which Rashi?
-
Gemini, Sagittarius
Specific Gravity
2.59-2.60
3.04-3.17
Cleavage
{001} Perfect, {110} Distinct, {101} Distinct
{001} Indistinct, {???} Indistinct
Chemical Composition
Be 4Si 2O 7(OH) 2Anthony et al , Handbook of mineralogy (2001)
(Mg,Fe)Al 2(PO 4) 2(OH) 2Arthur Thomas , Gemstones (2009) More from other references
Pleochroism
none.
Transparent crystals show a strong pleochroism: colorless light blue dark (violet) blueHerve Nicolas Lazzarelli
Transparency
TransparentAnthony et al
Transparent, Translucent
Refractive Index
1.583-1.614
1.604-1.646
Crystal System
Orthorhombic Pyramidal H-M Symbol (mm2) Space Group: Ccm21
monoclinic
Birefringence
-9999
0.031-0.036
Clarity
TransparentAnthony et al
Transparent
Neurological
-
Balances digestive system and reduces bloating
Cardiovascular
Promotes mental clarity
-
Digestive
-
Supports digestive health
Psychology
Harmony
Clarity
Healing
Emotional healing
Emotional healing
Qualities Associated
Creativity
Psychic Abilities
Bertrandite Vs Lazulite Fracture
Fracture is an important parameter when you compare Bertrandite and Lazulite Physical Properties. It is necessary to understand the significance of these properties, before you compare Bertrandite Vs Lazulite 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. Lazulite fracture is Uneven.
Bertrandite Vs Lazulite Luster
A primary knowledge about Bertrandite vs Lazulite 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. Bertrandite exhibits Vitreous luster.