"Wolf tooth" pendant in Golden Obsidian, cornaline, braided cord with red sandalwood.
Obsidian is a natural glass, produced during a silica-rich lava emission containing very little water (-3%). At the time of its release from the volcano, it undergoes a very rapid cooling which freezes the mechanisms of crystallization. "It's like a piece of lava frozen on its way out of the volcano."
-Obsidian is formed so quickly that atoms are unable to organize into crystalline structures. The result gives a volcanic glass with a smooth uniform texture. Due to the lack of crystalline structure, the Obsidian has sharp edges and extremely thin blades.
-It is a natural mineral material that has a composition that is too complex to be composed of a simple mineral. However, Obsidian consists mainly of SiO2 (silicon dioxide), usually 70% or more.
-Its fracture is clearly conchoidal and its hardness on the Mohs scale is between 7 and 7.5 (it radiates the glass).
-Black is the most common color of Obsidian. However, it can also be brown or green. Rarely, Obsidian can be blue, red, orange or yellow.
-The color difference appears due to changes in impurities and in the oxidation state of the chemical elements.
-It is a stone of dark color, due to its richness in magnesium and iron. The surface of this gemstone is made up of beautiful patterns in the form of streaks, patches, stains, inclusions or stripes of color. These various modes are created in a natural way at the time of the formation of the stone.
-Sometimes two colors of Obsidian blend together in a single specimen. The most common color combination is black and Brown called "mahogany Obsidian".
-Obsidian can also have an iridescent or metallic appearance caused by the light reflection of tiny inclusions of mineral crystals, rocky debris or gas. These specimens are highly coveted for the manufacture of jewellery.
The formation of gold and silver Obsidian
-These varieties contain small bubbles that create a gold or silver color reflectance.
-It occurs when hot lava flows enter water. Very small inclusions of water vapour form micro bubbles of air or gas that freeze with the cooling of the lava.
-It is these micro bubbles that later cause the reflectance of gold or shiny silver.
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