Tri-Flow Mahogany Obsidian Slab Lapidary Stone Slice Cut Rock

Tri-Flow Obsidian Slab – Rare Old Stock Mahogany Obsidian from Glass Butte, Oregon

Measurements (inches - longest - approx): 4.9 x 2.7 x .24

Elevate your lapidary projects with this stunning old-stock Tri-Flow Obsidian slab from Glass Butte, Oregon—a rare and visually striking variety of mahogany obsidian known for its flowing, layered patterns and deep contrast. This material features intricate currents of black, red, and brown bands, created by magnetite-rich lava flow, giving it a dramatic and almost liquid appearance.

When cut thin or held to light, the pure areas of obsidian are often semi-transparent, revealing beautiful internal clarity. This makes Tri-Flow Obsidian ideal for creating designer-grade cabochons, display pieces, and polished slabs. It takes an exceptional high-gloss polish, showcasing its natural glassy finish.

🔍 Product Features:

• Material: Tri-Flow Mahogany Obsidian

• Origin: Glass Butte, Oregon, USA

• Color & Pattern: Rich layered waves in black, red, and brown

• Transparency: Translucent zones when cut thin

• Finish: Excellent polish with high glass-like shine

• Use Cases: Cabbing, jewelry making, collection, or display

💎 Why You’ll Love It:

• Rare old stock material – hard to find in today's market

• Unique flowing patterns not found in standard obsidian

• Ideal for lapidary artists and collectors

• Formed naturally in volcanic flows with high magnetite content

Don’t miss your chance to work with this exceptional and disappearing material.

The last photo has been taken dry so that you may see any defects. The other images were taken wet to simulate polish.

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. Most stones are taken wet. 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.