Size｜ 5cm(length)X4.7cm(weight)X3cm(thickness) Materials｜ Rock/Pigment/Protective Paint Maintenances method｜ How to clean: If the rock gets dirty, use wet soft cloth to brush gently. To avoid the pattern on the rock to be metamorphism, please put the rock at a cool and dry place. Attention｜ There is some color-differences between photo and reality. Even though the rock had already covered by protective paint, it’s still fragile. So don’t put them in an aquarium or do some water activities with them.