Also, there is no need to rush out and buy new gems just to try this. You can get the same connections with a quartz crystal. A quartz crystal can be used to replace any other gem when its needed. It will require programming, meaning that it must be cleansed and then the intention to be clearly put "in" the crystal, and so if you have the other gems, they are possibly easier for you to use unless you are comfortable working with crystals already
Other stones known to help with meeting guides, are Angelite, Selenite, Apophylite, and Kyanite.
I personally use Sunstone, Celestite, Rose quartz and Labradorite for connecting. The reasons being, they are chosen by my guides. My one guide sent me on a two week search for sunstone to use with him....
The sunstone is for a Phoenix guide I have, and is NOT a common spirit guide connection stone. However, when I'm doing spiritual work if I find myself grabbing my sunstone, it is to enhance my connection with him, usually because he will be quite prominent in the task ahead of us. The celestite is for a family angelic guide and a very common connection stone. The Rose Quartz is for another "family" guide which I am able to connect to through the heart chakra, again not a common stone for connecting.
And finally, Labradorite is one I find myself drawn to many times when I am working with others to help them reach their guides. It is a stone for working with spirit and guides, and so if you happen to have some, this will help you as well.
The reason I have shared my personal stones with you, is to show you that its not all black and white. There is no hard fast rules as to what to use when where and how; its as unique as the individual. Following the general guidelines is how you can get started, and then from there you move on into your own comfort zone and patterns
(c) Rosemary Eir