There are a few different ways to think about crystals and how they interact. One way is that some crystals have properties that can cancel each other out. For example, if you have a crystal that helps with focus and another that helps with relaxation, pairing them together might not give you the desired effect.
Another way to think about it is that some crystals just don't work well together. This could be for a number of reasons - maybe their energies clash, or maybe they just don't complement each other aesthetically.
Here are a few examples of crystals that shouldn't be paired together:
1. Selenite and amethyst - Selenite is a very soft crystal and amethyst is quite hard. This can create an uncomfortable feeling when they're placed next to each other.
2. Tourmaline and turquoise - These two stones can sometimes look very similar, so it's best to avoid pairing them together. It can be confusing and visually jarring.
3 . citrine and carnelian - Carnelian is known as a stone of motivation and action, while citrine is known as a stone of abundance and prosperity. While there's nothing wrong with having both these things in your life, putting them next to each other can create too much energy and make it difficult to focus on manifesting your goals.