BoardsObsidian Chess

Obsidian Chess

Obsidian is mineral, but it is not a true mineral because, like glass, it is not crystalline; moreover, its composition is too variable to be classified as a mineral. It is sometimes classified as a mineraloid. 

Although obsidian is generally dark in color, similar to mafic rocks such as basalt, the composition of obsidian is extremely felsic. Obsidian is primarily composed of SiO2 (silicon dioxide), typically 70% by weight or more.

 Crystalline rocks of similar composition include granite and rhyolite. Since obsidian is metastable to the earth’s surface (over time the glass devitrifies, becoming fine-grained mineral crystals), obsidian is older than the Miocene Age is rare. Exceptionally ancient obsidians include welded Cretaceous tuff and partially devitrified Ordovician perlite. This transformation of obsidian is accelerated by the presence of water. 

Although newly formed obsidian has a low water content, usually less than 1% water by weight, it gradually hydrates when exposed to the aquifer, forming perlite.

Obsidian Chess Set

Obsidian Chess Set
Obsidian Chess Set

Obsidian is a beautiful and sleek material that makes for an elegant chessboard.
Made from the cooled lava of Obsidian’s origins, this stone has been handcrafted by skilled craftsmen to create one-of-kind pieces you’ll never want to put down!

Obsidian Chessboards
Obsidian Chessboards
Obsidian Chess Set
Obsidian Chess

Chess pieces are not only aesthetically pleasing, but they also have a pleasant weight to balance.
The set includes 32 chessboards and wooden boxes when ordered each piece measures 35x35mm with heights varying from 90-53 depending on their rank (King=90 mm., Queen =100 mm., Pawn 55).

Pieces:

Pieces: 32 chess pieces, sold with chess board and box.

Wrapping It Up

Pure obsidian usually has a dark appearance, although the color will vary depending on the impurities present. Iron and other transitional elements can give obsidian a dark brown to black color. Most black obsidians contain nanoinclusions of magnetite, an iron oxide. 

Very few obsidian samples are almost colorless. In some stones, the inclusion of small radially agglutinated white crystals (spherulites) of the mineral cristobalite in the black glass produces a marbled or snowflake pattern (snowflake obsidian). 

Obsidian can contain patterns of gas bubbles that remain from the lava flow, aligned along the layers created when molten rock flows before being cooled. These bubbles can produce interesting effects such as a golden glow (shiny obsidian). A rainbow-like iridescent sheen (fiery obsidian) is caused by inclusions of magnetite nanoparticles creating thin film interference.