The pink color glass used as the material, pink gyoku/shinkinzaka (ruby red), is a special color created by coloring with 99.9% pure gold. (The material cost for this color is higher than other colors, but it is not currently reflected in the price.) It looks even more beautiful when light shines on it. Perfect for table or shelf decor. This is a small glass container, just big enough to hold one ring. Cute, adorable, blown glass. Use it freely. There is a slight bulge in the middle. Diameter: Approximately 4-4.5cm Height: Approximately 3.3cm (This is approximate as the shape is not uniform) Inside height: Approximately 3cm (Not including the bulge inside) Stylish goods Free-blown, blown glass One-of-a-kind Not heat-resistant glass. Made in a glass studio in Gifu Prefecture, a nature-rich area next to Aichi Prefecture. MADE IN JAPAN