Joetsu Crystal Glass, with its workshop in Gunma Prefecture, has had its artisans hand-blowing glass since 1905. As a manufacturer producing colorful glassware using a variety of colored glass, it boasts one of the largest scales in Japan. And, the company's brand, "Tsukiyono Kobo," reflects the warmth of handmade craftsmanship and the appeal of colored glass in its creations. From this brand come handmade glass pieces that are carefully crafted, valuing rich originality and artistry, as well as a warmth that touches the heart. Unfortunately, the company closed in 2023, making its products valuable now.