There are tons of crystals out there that are used to make gemstone jewelry. As you go out to explore jewelry, you will find numerous stones that are closely related to each other. If you go deeper, you will find that these are, in simple words, varieties of the same mineral. For instance, have you seen tiger eye jewelry? One of the gemstones closely related to the tiger eye is the blue tiger eye stone – you will find many jewelers crafting blue tiger eye jewelry from this stone.