Clear Quartz:

Quartz crystal is probably the most common stone/crystal in the world, but it's also one of the core stone of anyone's collection. Pendulums and crystal balls are often made out of clear quartz, not to mention all those decorative crystals you may see in home stores. Never underestimate it's power though simply because it's so common.

It’s valued for its piezoelectric and pyroelectric properties, by which it can transform mechanical pressure or heat into electromagnetic energy, and vice versa. Its ability to focus, amplify, store and transform energy is used throughout the technology world in ultrasound devices, watches, microphones, radio transmitters and receivers, memory chips in computers and other electronic circuitry. The same properties of energy amplification, programmability and memory also make Clear Quartz the most versatile and multidimensional stone in the mineral kingdom for healing, meditation, expansion of consciousness, communication with guides, past-life recall, attracting love or prosperity, or virtually any purpose.

So all in all what I'm saying is if you don't have at least one clear quartz, I'd suggest that as your next stone purchase. 

Clear Quartz Crystal is very clear and translucent in its appearance and therefore it is the manifestation of light and clarity in the material realm. It symbolizes our striving for perfection in our inner growth and raising our consciousness toward higher levels. Why I’ve chosen it specifically for today, is that these crystals can store information for you and serve as a focal point for your intentions so it can be programmed to send out your request to the Universe and because it vibrates at a higher and more pure level, when done properly this stone can talk to the universe on your behalf at a far greater rate and intensity than you can on your own.

Just make certain your crystal is well cared for and use it in your meditations. Have a separate one for each point of focus and when you meditate, hold the crystal close to your body. Focus intently on your vision, dream, or goal. Imagine and hold that vision in its powerful clarity, as if you really were experiencing the goal in this moment. You have to manifest the emotion that you would have, if the thing you want is already reality, that’s the most important part of the law of attraction. Feel the strong emotions of success and fulfillment associated with your goal. You vibrational energy will flow into the stone and this particular stone will resend that back out to the universe on your behalf. Pretty cool, right?