To activate your Huge Gem Ring Red White And Blue Assorted Shapes, press the button underneath the gem for a wild flashing light show. NOTE: One size fits most (plastic sides can be stretched out a bit for adults).. Dimensions: Height: 1.50 in. Diameter: 1.87 in. LED Colors: 2 Red, 1 Blue, 1 White LED Huge Gem Rings come packed in a display box of 24 pieces. Batteries are NOT replaceable.