10PCs Snowflake Obsidian Rough Stones Natural Black White Volcanic Glass Gemstone Crystal Mineral Raw Specimens - Utah

Description

• You will get 10pcs of the Obsidian Rough similar to the ones in the listing, the size and the color of the stones may slightly vary as well due to the fact that all minerals are different. (see photo, the photos are taken under bright light, some photos taken wet)! Average 1pc Size: 41mm x 35mm x 31mm / 1 5/8 x 1 3/8 x 1 1/4 Inches; Average 1pc Weight: 40-100g / 1.4-3.5oz;
• Snowflake Obsidian is a natural volcanic glass containing the mineral Cristobalite in the form of white "snowflake" crystal patterns. Snowflake Obsidian is formed when the felsic lava from a volcano rapidly cools down with very minimum crystal growth. Its basically a volcanic glass that formed as an igneous rock. Snowflake obsidian forms when the mineral cristobalite is present and gets trapped in the obsidian as it cools.
• Cristobalite is a silica, similar to quartz but with a different crystal structure. As obsidian is a glass and cristobalite is a crystal, snowflake obsidian is essentially a lot of tiny crystals trapped in black glass rock. Snowflake Obsidian is usually black in color, with white patches called Phenocryst. It resembles snowflakes, hence the name. Its also known as White Snowflake Obsidian and Gray Snowflake Obsidian. Large deposits of Snowflake Obsidian can be found in Mexico, Iceland, the USA.
• Obsidian's high silica content makes the lava it forms from highly viscous, or thick. It also has a low water content, since as the magma reaches the surface, most of the water evaporates as steam. The lava therefore moves quite slowly. The composition of obsidian can change over time, just as any type of rock changes over time, moving through different phases of the rock cycle. Over a long period of time, it changes into true rock.
• (The above information is provided solely for informational purpose. Kindly note that all stones are offered for decorative purposes only. Please, handle your stones with great care, do not grind or crumble them, do not dip or add them into your food or drink, do not use any parts of them in any elixirs, potions, lotions etc. Always make sure you wash your hands before and after working with your crystals.)

All our minerals and crystals are carefully measured with digital measuring instruments that provide the high accuracy of numbers/values!

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