Lowball glass -"燦彩"Sansai , Light green by Goun Maeda

Kiyomizu-Ware Crystal Glaze Rock Glass

Elevate your everyday drink with this handmade ceramic rock glass from Goun Kiln in Higashiyama, Kyoto. The “crystal glaze” finish, inspired by ice crystals, showcases the traditional pottery techniques cultivated over generations.

Featured Success on Makuake

Launched in February 2025, our crowdfunding on Makuake far exceeded its goal, reflecting the popularity of these rock glasses among fans of japan’s traditional craftsmanship.

One-of-a-Kind Zinc Crystal Patterns

Fired at 1,250℃, the zinc-rich glaze crystallizes uniquely on each glass. Under different light, you’ll see shades of blue, green, and even silver—adding a subtle sparkle to the amber hue of your whiskey.

Perfect for Yourself or as a Gift

Available with our signature KOTOPOTTER gift box, this glass makes an exceptional present for friends, family, or colleagues who appreciate fine kyoto pottery.

Note: Gift box is not included if you select “For Home Use.”

Ergonomic Form and Versatile Capacity

Shaped on the wheel and refined by hand, each glass offers a satisfying weight and comfortable grip. The generous capacity fits plenty of ice and spirit—yet it’s equally suited for iced tea or non-alcoholic cocktails. A stable base prevents wobbling on any surface.

Crafted by Artisan Goun Maeda

With over 50 years of experience, Goun Maeda has dedicated his life to perfecting crystal glazes. Through countless experiments and unwavering commitment to traditional techniques, he brings each piece to life—reminding us that pottery is truly alive.

Owner’s Comment

“When the light catches the glaze, you’ll see the crystal patterns shimmer—transforming your evening pour into a small moment of art.”
— Masatoshi Yokoyama, KOTOPOTTER