The main chemical compositions of Rain flower pebbles  is silicon dioxide ,which is mainly belongs to nueter.And the same as its environment.Therefore,Rain flower pebbles is a nuetral stone.It must keep under a nuetral background.Rain flower pebbles must keep away from heat and directly exposition to sunshine.As the temperature increases,Rain flower pebbles will change the nature of pigment ion.Then this situation will make Rain flower pebbles go bad.Prevent dry also very important in the process.If you achieve all the above steps,you will  reserve a very good rain flower pebble.