2.1" Spiderweb Obsidian Cabochon

This is a 2.1" tall cabochon that's made from spiderweb obsidian collected from Mexico. This obsidian specimen has been polished to a glossy finish and would be perfect for jewelry making.

Obsidian is a natural, volcanic "glass" that is formed when molten rock cools so quickly that the atoms don't have enough time to arrange themselves into crystals. To form obsidian, the composition of the lava must be high in silica. Depending on the minerals present within this lava along with the speed of cooling, a variety of colorful bands, spots or swirls can appear once the lava has solidified. Pure obsidian is often a solid black color, however impurities can result in small color variations to the obsidian.

Obsidian was important material for many ancient people. It was used for making tools, weapons, jewelry and decorative items. It was a major barter material for Native Americans. When broken its conchoidal fracturing results in extremely sharp edges which made it ideal for making knives, scrapers, arrowheads and spearpoints. It is even occasionally used today to produce surgeons scalpels as the edges are several times sharper (only 3 nanometers) than blades that can be produced from steel.
DETAILS
SPECIES
Obsidian (Volcanic Glass)
LOCATION
Chihuahua, Mexico
SIZE
2.1 x .97", .2" thick
CATEGORY
ITEM
#171352