〜自然と人の再生の物語〜　三宅島ガラス　カボション　スクエア型（中）n365

This square-shaped glass item comes in a loupe case and features a unique blue-green color due to volcanic ash from Miyajima Island. It is handcrafted through a rare process at high temperatures.

• The description claims that the glass has a unique blue-green color due to iron ions generated from iron in volcanic ash.
• The description claims that the manufacturing process is unique and involves handcrafting at high temperatures.