Silicone mold for a small Cascade Geode tray. The tray is about 18 cm (7") wide and 9 mm (1/3") thick.
The tray is made up of three layers of 3 mm each. Each layer has the same shape but is slightly smaller than the previous layer, which gives the side of the tray a unique cascade-like appearance.
There is also a Geode coaster mold and a larger tray mold available with the same cascade design, see one of the pictures (for illustrative purposes, this items is only for the small tray mold).