Obsidianis volcanic glass. It often has flow lines that create interestingeffects. Gold sheen and silver sheen obsidian's display gold andsilver shimmerings when polished, rainbow obsidian displays differentcolors, etc. Obsidian has a reputation for being difficult to polish.Usually the reason for difficult polishing is that coarse grits cancreate a fairly deep fracture zone that doesn't come out when thestone is cut at finer grits. Another problem is obsidian doesn'tpolish well if it gets too hot. So, if you don't use super coarsegrinding wheels and if you keep your polishing wheel slow and wet,good results will easily be obtained. Diamond wheel finishing workswell.
Usually Obsidian is a jetblack stone with a vitreous (glassy) lustre. Just like glass, obsidiantends to shatter into sharp fragments when hit hard, this strength andbrittleness have resulted in its use as sharp cutting implements andweapons such as spear and arrowheads or inserted into wood madewonderful clubs. Pure obsidian is usually dark in appearance, thoughthe color varies depending on the presence of impurities. Iron andmagnesium typically give the obsidian a dark brown to black color. Veryfew samples are nearly colorless. In some stones, the inclusion ofsmall, white, radially clustered crystals of quartzlike cristobalite inthe black glass produce a blotchy or snowflake pattern (snowflakeobsidian). It may contain patterns of gas bubbles remaining from thelava flow, aligned along layers created as the molten rock was flowingbefore being cooled. These bubbles can produce interesting effects suchas a golden sheen (sheen obsidian) or an iridescent, rainbow-like sheen(rainbow obsidian).
White Obsidian Stone
A black obsidian from Mexico with large white snowflake-like dots across its surface. A black obsidian from Mexico with large white snowflake-like dots across its surface. Skip to content. Home Get Our E-mails Welcome visitor! You can login or create an account. Black Obsidian is the stone of truth and as such is a highly useful instrument to use for meditation. The stone holds great benefits that you will observe in very subtle but effective ways. The powers of Black Obsidian are in such abundance that you will find yourself in a process of discovery of the truth when you start meditating with this stone. Iron and magnesium typically give the obsidian a dark brown to black color. Very few samples are nearly colorless. In some stones, the inclusion of small, white, radially clustered crystals of quartzlike cristobalite in the black glass produce a blotchy or snowflake pattern (snowflake obsidian). Obsidian with a high iron content turns the stone a reddish brown and is known as Mahogany Obsidian. Call of duty 2 dmg mac download. Inclusions of small, white, radially clustered crystals of cristobalite in the black glass produce a blotchy or snowflake pattern producing Snowflake Obsidian.
