It can be found in Argentina, Armenia, Azerbaijan, Canada, Chile, Greece, El Salvador, Guatemala, Iceland, Italy, Japan, Kenya, Mexico, New Zealand, Peru, Scotland and United States. Obsidian can be found in locations which have experienced rhyolitic eruptions. These bubbles can produce interesting effects such as a golden sheen (sheen obsidian) or an iridescent, rainbow-like sheen (rainbow obsidian).
It may contain patterns of gas bubbles remaining from the lava flow, aligned along layers created as the molten rock was flowing before being cooled. In some stones, the inclusion of small, white, radially clustered crystals of cristobalite in the black glass produce a blotchy or snowflake pattern (snowflake obsidian). Iron and magnesium typically give the obsidian a dark green to brown to black color. Pure obsidian is usually dark in appearance, though the color varies depending on the presence of impurities. It is sometimes classified as a mineraloid. Obsidian is mineral-like, but not a true mineral because as a glass it is not crystalline in addition, its composition is too complex to comprise a single mineral.
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If you are unsure about what you need, please visit our Flintknapping Buyer's Guide, or feel free to contact us and we will be glad to help. If you are graduating to this size material from one of our kits, we recommend adding a large copper percussion billet to your order. Attempting to knap large stone with too small of a billet will damage the billet and not produce sizable thinning flakes early on in the process as needed. Large knapping material requires large billets. In efforts to avoid defects as much as possible, we perform a few thinning blows to ensure that you do not pay for large amounts of waste, over thick spalls, or fragile/thin sizes that will shatter with the first strike. On some spalls however, blemishes do get past us because not all defects are evident at first or even second inspection. We strive to provide the cleanest, blemish free knapping material within our means. WARNING: Obsidian flakes can be sharper than razor blades! Exercise extreme caution!
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To make certain you receive the full range of sizes of this material you will need to order multiple pounds or purchase a flat rate box of material. Most often a one pound order will contain two pieces of stone in the approx 4 inch range. Ordering 1 pound of this material will not ensure that you will get a single 6 inch spall.
This size is good for large and medium points and blades. Our cleaned and graded Mahogany Obsidian spalls range in size from 3-6 inch pieces. Mahogany Obsidian is a popular volcanic glass favored by flintknappers for its unique wood-like colorful streaks of brown/dark red and black, consistent quality, and uniform flaking. Knappers who favor pressure flaking techniques usually enjoy Obsidian in particular for its potential to run super long flakes. It repels negativity and disperses unloving thoughts.Medium to large spalls of #1 graded and cleaned volcanic glass with unique wood-like colorful streaks of brown/dark red and black. Sold by the pound (1-2 pieces per lb). Black Obsidian is protective and provides support during change. Releases imbalances and negative energies. In addition to the generic healing properties of Obsidian, specific colours and types have additional attributes: Black Obsidianīlack Obsidian is a very powerful and creative stone. It reduces arthritis pain, joint problems and cramps. Obsidian aids the digestion and detoxifies. Promotes qualities of compassion and strength. Obsidian dissolves emotional blockages and ancient traumas. Brings clarity to the mind and clears confusion. It stimulates growth on all levels, urging exploration of the unknown and opening new horizons. Obsidian draws out mental stress and tension. It blocks psychic attack and absorbs negative energies from the environment. A strongly protective stone, it forms a shield against negativity. ♥ Purification ♥ Transformation ♥ Fulfilment ♥ Metamorphoses ♥ Manifestation ♥ Practicality ♥ Psychic ability Shop - Obsidian Jewellery & Gifts Healing with Obsidian Typical colours - Black, silvery or brown
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