CAPRICORN Birthstone Pendant on Thong (Snowflake Obsidian)

CAPRICORN Birthstone Pendant on Thong (Snowflake Obsidian)

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Date: 22nd December - 20th January


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Capricorn Birthstone (Snowflake Obsidian)

Date: 22nd December - 20th January

Obsidian is a naturally occurring volcanic glass formed as an extrusive igneous rock. It is produced when felsic lava extruded from a volcano cools rapidly without crystal growth. Pure obsidian is usually dark in appearance though the colour varies depending on the presence of impurities. Iron and magnesium typically give the obsidian a dark green to brown to black colour. A very few samples are nearly colourless. In some stones, the inclusion of small white radially clustered crystals of cristobalite in the black glass produces a blotchy or flake pattern. It may contain patterns of gas bubbles remaining from the lava flow aligned along with layers created as the molten rock was flowing before being cooled. These bubbles can produce interesting effects such as a golden or rainbow sheen.