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OBSIDIAN

OBSIDIAN

2001-29

$3.00 AUD
$3.00 AUD
SALE ! TOO LATE, SOLD
2001-29
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Obsidian is a naturally occurring volcanic glass that forms when lava erupts from a volcano and cools quickly, resulting in minimal crystal development. Classified as an igneous rock, it originates from felsic lava, which contains a high concentration of lighter elements like silicon, oxygen, aluminum, sodium, and potassium. Typically found at the edges of rhyolitic lava flows, known as obsidian flows, this material has a significant silica content that contributes to its high viscosity. This viscosity restricts atomic diffusion within the lava, preventing the initial nucleation phase necessary for mineral crystal formation, leading to the creation of natural glass through rapid cooling. 

Characterized by its hardness, brittleness, and amorphous structure, obsidian fractures to produce sharp edges. Historically, it was utilized for crafting cutting and piercing tools, and it has also been explored for use in surgical scalpel blades.

Specimen details

The numbers under "variant" are the measurements in mm and weight in grams. Where known, the origin of the specimen is mentioned. The number at the end, is the specimen number in our collection. Colours may vary, due to photography.

Care

It's important to know that many minerals can be effectively cleaned with water. However, before using any cleaning methods, such as dissolvers or ultrasound, please take the time to research online. Improper use of these techniques could potentially harm your specimen.

Shipping

Shipping fees depend on the weight of your order and its destination, and they will be calculated at checkout. Not all platforms use the same rate. We will inform you about any rebates where possible. If you have any questions, feel free to reach out to us before placing your order. We strive to use the most economical shipping methods for your specimens and combine multiple orders to minimize costs. Please note that packaging is included in the shipping fees.
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