![]() Smoky quartz usually has a splotchy or zoned distribution to its color while Obsidian's color is more uniformly distributed. The piezoelectric and optical properties in quartz are thus absent in obsidian. However, many properties dependant on a crystal structure are altered or absent in obsidian because it lacks any crystal structure of its own. Often confused with smoky quartz, obsidian has similar properties to quartz because of a similar chemistry. Small nuggets of obsidian that have been naturally rounded and smoothed by wind and water are called Apache Tears. Inclusions of small, white, radially clustered crystals of cristobalite in the black glass produce a blotchy or snowflake pattern producing Snowflake Obsidian. ![]() These bubbles can produce interesting effects such as a golden sheen, known as Sheen Obsidian or a rainbow sheen called Rainbow Obsidian. Obsidian can contain small bubbles of air that are aligned along layers created as the molten rock was flowing just before being cooled. Iron and magnesium give the obsidian a dark green to black color. This process produces a glassy texture in the resulting rock. Often the lava pours into a lake or ocean and is cooled quickly. Obsidian is the result of volcanic lava coming in contact with water. ![]() Uses: As a semiprecious stone and ornamental stone for carvings.ĬLICK HERE To Purchase Kidz Rocks Obsidian Products. Chemistry: SiO2 Mostly silicon dioxide with large amounts of impurities.
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