Its variety of colors is the result of the presence ... As with other forms of obsidian, rainbow obsidian is both rock and glass. However, this isn’t the same kind of glass that’s used in ...

The Google Pixel 9a colors have leaked, and the device will come in four colorways — Obsidian, Porcelain, Peony, and Rock ...

Before we get into the snowflakes, obsidian is formed when rhyolitic magma (viscous molten rock with high concentrations ... brown, and other colors due to impurities. Because of the lack of ...