![]() Rarely found colors of Obsidian rocks are :Ī very rare occurrence of obsidians is Blue, Orange, Red, and Yellow. The highest occurrence of obsidians is in Black, but it is also available in Brown, Green, or Tan. The streak of obsidian is white, but various colors occur in nature.įrequently found colors of Obsidian rocks are: It means it is heavier than water and dense medium as a mass. ![]() The density of obsidian is 2.55 g/cubic cm. It is measured in relevance to the density of water in gram per cubic centimeter of the mass. The density of rock is used to express specific gravity. Let’s see some significant properties of obsidians. These all property attributes determine the applications of obsidian rocks. Obsidians have various physical & visual properties, such as Hardness, Grain Size, Fracture, Streak (Colors), Porosity, Luster, and Strength.
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