This is a set of two glass marbles, one blue and one clear. I purchased them in the United States about 7 years ago. I intended to use them for art projects, but after taking them out of their containers for inspection, I never used them and have been storing them at home. I believe it's difficult to purchase this quantity of glass marbles in Japan. They would look beautiful as interior decoration, placed in a container and illuminated by sunlight, creating a sparkling and beautiful display of reflections. They are also suitable as materials for creating artwork. - Color: Deep blue and clear - Container Type: Plastic container - Material: Glass - Quantity: Set of 2 - Size: Clear → 13-17mm, Total weight 1462g (including container) Blue → 13-15mm, Total weight 1306g (including container) Thank you for looking.