Each 10ml glass bottle has essential oils and crystals. All bottles are mixed with coconut oil. Crystal Collection showcases the crystals inside of a clear roller bottle. I have mixed each blend adding the essential oils and carrier oil directly into the bottle with the crystals. When you pair crystals together, it can intensify what you want to attract. Different crystals and stones carry a different energy, and by harmonizing them together, you will create a powerful mixture. For more information about pairing please see below.