Snowflake Obsidian Cabochon

Snowflake obsidian in a natural variety of obsidian, it's a type of black obsidian with white or grayish spots. These spots are called spherulites, and they are composed of needle-shaped cristobalite, a type of quartz. Snowflake Obsidian is usually black in color, with white patches called Phenocryst. It resembles snowflakes, hence the name. It is formed when the felsic lava from a volcano rapidly cools down with very minimum crystal growth. This cabochon is a natural shape 4cm from top to bottom, 2.5cm across the wider end and 2cm at the narrow end and 5mm thick. This will arrive in a small envelope with a bow as pictured. If this is a gift please let me know in the comments when checking out, and I can include your personal message in the package. Remember, rocks are like potato chips, you can't have just one! theyrejustrocks.com