How to choose enough birthday crystals?

Birthday1:1990/06/10 Gemini guardian stones: aquamarine, fluorite and topaz;

Birthday 2: 1990/07/28 Leo guardian stones: tourmaline, garnet, topaz, ruby, moonstone;

The above can be selected according to personal preference. There is not much difference between a crystal necklace and a crystal. As long as it is a natural seed, it has the same function. The above constellation guardian stones are all worn on the left hand.