Created with the image of the 1st movement of Piano Sonata No. 14 “Moonlight” composed by Ludwig van Beethoven (1770-1827). In order to produce a deep, deep blue which express the feeling of sinking, glass powder and crushed small pieces of glass are layered and melted to adjust the color. In order to express the organic movement in the deep sea and the vague light, I made the surface of the glass uneven. It is a beautiful accessory that has a deep and calm color when worn, but the color changes by the reflection of light each time it moves.