TOWADA STONE

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A Globally Rare Natural Stone:
The Serene Azure

Towada Stone—a precious gem found exclusively within the confines of Mount Yakushimori in Hinai Town, Akita Prefecture, where an entire mountain comprises this extraordinary mineral formation.
Born from the depths of time ten million years ago, this remarkable stone emerged from volcanic ash that solidified beneath ancient seas, bearing the formal geological designation of "green tuff."
Beyond its traditional role as architectural stone, Towada Stone has revealed itself as a multifaceted marvel—serving as both soil enhancement material and environmental stone, with numerous exceptional properties continuing to emerge through modern research.
The stone's captivating palette of verdant greens and celestial blues owes its existence to iron and other metals sealed within the volcanic ash before oxidation could claim them. Like snowflakes in their infinite variety, no two specimens share identical patterns, each one transforming its countenance as light dances across its surface or moisture graces its form.
When kissed by water, Towada Stone undergoes a metamorphosis—its hues deepen and shift, radiating a gentle, ethereal luminescence that has earned it the poetic epithet "yasuragi no ao"—the Serene Azure.
The stone's undulating colors and crystalline structure, with their subtle rhythmic variations, are believed to bestow a profound sense of tranquility upon the human spirit, offering respite to weary souls through nature's own artistry.

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Touched by Gentleness:Where Beauty Emerges from Function

Among stones, Towada Stone stands apart for its remarkable softness and non-slip properties even when wet—qualities that have made it a treasured material in hot springs and bathhouses throughout the ages.

Contemporary research has unveiled a constellation of extraordinary properties, earning this remarkable mineral the evocative titles of "magic stone" and "miracle stone."

Its defining characteristic lies in its microporous structure—countless minute cavities that grant it exceptional absorption capabilities. Within each gram of Towada Stone exists an astounding four square meters of internal surface area, creating a vast network of microscopic chambers.

For Our Future and Earth's Tomorrow:
An Environmental Stone

Through extensive research, Towada Stone's remarkable functions continue to reveal themselves, capturing attention across diverse fields and expanding its applications as an environmental material.

Towada Stone generates absolutely no waste. Every fragment—from cutting remnants crushed to fine particles, to stone dust from carving, to powder collected and dried from the polishing process—finds purpose through various processing methods, serving applications across multiple industries.

This complete utilization embodies a philosophy of harmony with nature, where nothing is discarded and everything contributes to a sustainable future.

Stone Fabrication

TOWADA STONE ~ From Quarry to Craft ~

The quarrying of Towada Stone commenced in 1973, marking the beginning of a meticulous journey from mountain to masterpiece. Here, we unveil the careful process that transforms raw stone into refined beauty.

Upon extraction, each stone undergoes its first transformation—precision slicing into slabs using specialized steel blades embedded with industrial diamonds, ensuring clean, accurate cuts through the stone's unique composition.

The slabs then receive their initial refinement through water-polishing techniques, gradually revealing the stone's inherent beauty as surfaces emerge smooth and lustrous.

Each piece is then precisely cut to specification, tailored to meet individual requirements for width, form, and dimension—a process where technical precision meets artistic vision.

The final polishing phase remains a testament to traditional craftsmanship, conducted entirely by skilled hands. This intimate touch awakens the stone's most remarkable quality: the deepening of its azure hues, transforming each piece into a more vivid expression of nature's artistry.

Quality assurance follows the time-honored tradition of human evaluation. Trained eyes examine each stone for pattern consistency and structural integrity, ensuring that only specimens meeting our exacting standards earn the privilege of bearing the Towada Stone name.

From quarry to completion, every step honors both the stone's ancient origins and the master craftspeople who bring its beauty to light.

Slab Specification	Dimensions	Weight (per m²)
Diamond-Cut 22mm Thick Slab	22 × 300 × 300・450・600・900mm 22 × 150 × 300mm 22 × 200 × 200・400mm	48.4kg
Diamond-Cut 15mm Thick Slab	15 × 150 × 150・300mm 15 × 300 × 300mm 15 × 200 × 200・400mm	33kg
Split-Face Finish	Approx. 50mm thick 50mm thick × 300 × 300・450・600mm	Approx. 77kg

Slab Specification	Dimensions
Diamond-Cut	Standard Custom Dimensions (Premium pricing applies) 22mm × width up to 300mm × length up to 900mm
Diamond-Cut	Large Format Custom Dimensions (Premium pricing applies) 22mm × width 301-400mm × length up to 900mm
Random Pattern Installation Material	Not irregular flagstone shapes, but standard products with natural edge finish
Special Processing Limits	Thickness: up to 150mm Width: up to 400mm Length: up to 900mm

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Stone Fabrication

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Slab Specification

Custom Dimensions and Special Processing