Tri-Flow Obsidian Slab – Rare Old Stock from Glass Butte, Oregon
This Tri-Flow Obsidian from Glass Butte, Oregon showcases gorgeous layered movement in deep blacks, reds, and browns. It’s a rare, old-stock variety of mahogany obsidian with a marbled appearance caused by magnetite-rich lava flows—and this one’s got killer contrast.
📏 Measurements (inches – longest – approx.): 4.3 x 3.3 x 0.21
Pure obsidian zones are semi-translucent when thin or backlit, revealing internal clarity that adds serious dimension. It takes a mirror-like polish and is a joy to work with whether you're after bold cabochons or sleek display slabs.
🔍 Product Features:
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Material: Tri-Flow Mahogany Obsidian
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Origin: Glass Butte, Oregon, USA
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Color & Pattern: Flowing black, red, and brown banding
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Transparency: Semi-translucent in thinner zones
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Finish: Takes a glassy high polish
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Use Cases: Cabbing, jewelry making, or display pieces
💎 Why You’ll Love It:
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Rare old stock from a classic Oregon locality
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Bold natural layering with strong contrast
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Translucent in sections when thin or backlit
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Great polishability for professional lapidary results
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Excellent for statement cabs or collector slabs
Natural Stone & Fossil Disclaimer:
All of the stones and fossils offered here are natural materials formed over millions of years through geological and organic processes. As a result, it is completely normal for them to exhibit natural fractures, pits, inclusions, voids, and other surface or internal features that reflect their ancient origins.
These characteristics are not flaws—they are part of what makes each piece unique. We encourage you to review all product photos carefully and research the properties of each material before purchasing to ensure it meets your expectations.
If you have any questions about a specific piece, feel free to contact us before ordering.
Photo Disclaimer:
I strive to provide accurate, unedited photos that represent each stone as naturally as possible. While I do not use filters or enhancements, please note that colors may appear slightly different depending on your screen’s brightness, contrast, and settings. All photos are taken with my monitor set to default display settings for the most neutral representation.
Slabs are typically photographed wet to simulate the appearance they will have when polished. This helps showcase the true color, pattern, and potential of the material. The final photo in each listing is usually taken dry to help you examine the natural surface for fractures, pits, or other imperfections. Please review all photos carefully before purchasing.
