![]() You can clearly see that texture is a great way to tell the difference between the two. Great contrast between tourmaline(left) and obsidian(right). These look alikes do have some differences which set them apart from obsidian despite them looking similar. There are some obsidian look alikes such as onyx, jet, and tourmaline which are confused primarily based color and appearance. However, when it breaks, its texture will be as smooth as glass. Obsidian can be found with a rough look after being exposure to the earth’s surface. This rock is referred to as one of nature’s forms of natural glass. Obsidian, due to its nature when it breaks, can be many times sharper than a typical razor blade. ![]() Obsidian however can be sharper than a diamond. A diamond has a hardness of a 10 on that same scale, being the very definition of 10. Obsidian has a hardness on the Mohs scale of hardness of roughly around a 5 or a 6. These notions may come from sources such as media type venues such as games that have obsidian as an item used in its gameplay. Many may come to believe that obsidian may be stronger than a diamond. Top specimen of obsidian is considered a mahogany type of obsidian. In this case the light will reflect in a way that allows the color of green, violet, or silver to be seen. Rainbow obsidian is a sheen obsidian that has some specific planes internally to the rock when it was formed from its original lava. The mineral cristobalite is what gives the white snowflake look on snowflake obsidian. These white inclusions give the appearance of a snowflake at times hence the snowflake designation. Snowflake obsidian is black obsidian that has white, uneven blooming, dots within the rock. The more rare colors can include minerals such as hematite, limonite, and small crystals of various feldspars. Other minerals in obsidian such as hornblende, plagioclase, biotite, and pyroxene can be present as well supporting a darker look. A majority of obsidian is black due to extremely tiny inclusions of iron oxide and the mineral magnetite contained within its glassy structure. People wonder why obsidian is commonly the color black.
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