For physical Yoni Egg exercises, such as those that primarily aim at strengthening the vaginal i.e. pelvic floor muscles, it doesn’t matter much what type of gemstone you choose. Roughly said, anything will do the job, even Yoni Eggs made of glass or silicone.
Nevertheless, for the energetic part, the type of gemstone to choose as the material for your Yoni Egg depends very much on you, that is, on what kind of person you are, on your gut feeling, on what you’re looking for, and on what fits for you at a particular moment.
As it is, crystals are thought to have certain particular (healing) properties and that will typically guide you in your choice. For instance, it’s thought that certain types of crystals can help overcome specific emotional blockages or traumas, and can balance or reinforce mental, physical, sexual, and spiritual energies.
Depending on the sort of crystal i.e. gemstone, it’s also thought that they have qualities that support physical healing aspects, such as improving the circulatory system, increase vaginal lubrication, heal wounds and infections, stimulate the immune system, among others.
On top of that, there are different qualities of gemstones, even within the same type of stone, with gradations of high, medium and low, and certified or not. It’s important to make sure you acquire the quality you’re looking for.
You will also notice that Yoni Egg providers usually mention the particular Chakra the gemstone corresponds with. Having a bit of knowledge about the function of Chakras can help you to make the right choice. Some Chakras (and thus gemstones) are rather connected to balancing emotions, others to love, intimacy or sexuality, and again others support spiritual growth, and so on.
Do mind that the list of Yoni Egg gemstones is sheer endless, and that you can almost find anything your heart desires. Although Jade, Obsidian, and Rose Quarts are without doubt the most popular crystals, you can also purchase Amazonite, Rhodonite, Serpentine, Chalcedony, Carnelian, Prehnite, Vesuvianite, Red Jasper, Chrysoprase, Bloodstone, or Marble Yoni Eggs, to name just a fraction of other options.