The Book of Zohar, Chapter "Yitro (Jethro)," Item 533: There are two gemstones and one Masach between them, standing between each other. The upper gemstone is colorless, it is not openly visible.
Item 534: Malchut is called “a gemstone” because it clings to NHY de ZA, which are called “legs.” Because of Malchut’s ascent to Bina, Bina, too, is called “a gemstone,” and it is an upper gemstone.
There exists the ladder of the spiritual degrees extending from the world of Infinity to our world. This ladder consists of 125 rungs. The upper part of each degree contains the lower part of a higher degree, while the lower part of each degree is immersed in an even lower degree.
The upper part of the highest degree is the world of Infinity, while its lower part is inside the lower degree. It follows that the lower part of each higher degree exists together with the upper part of the lower degree. Hence, in each degree there is a common part between the upper and lower degrees where both of them unite into one.
The upper part of each degree is called Galgalta ve Eynaim (GE), while its lower part AHP (Awzen-Hotem-Peh). In sum, they comprise 10 Sefirot, but in a way that the lower degree contains the AHP of the upper one, and the GE of the lower degree clothe this AHP. It follows that the upper part of each degree is comprised of 10 Sefirot in total, which the upper and the lower degrees form together. This is how it is at every degree.
In the collective system of souls we are all connected together, all seven billion souls. Hence, all parts of my soul are included into everybody, and if I connect with them correctly, all of their parts are within me either as my GE or AHP. That is, nothing is left of me but my initial point with which I started my path. Only it remains in me; it is my foundation. I acquire everything else from the others: either the GE or AHP. I include everyone within myself: It is the body of my soul.
This is what The Zohar explains: It is impossible to create a "gemstone," Malchut, the spiritual vessel of each person unless he or she connects with everybody. I need everyone: They are my spiritual vessel. I have to receive my GE and AHP from everybody. And who am I? I’m the point in the heart from which I started the path.
From the 2nd part of the Daily Kabbalah Lesson 4/8/2011, The Book of Zohar