12 Hoshen Gems
The priestly breastplate ( Hebrew : חֹשֶׁן ẖošen) was a sacred breastplate worn by the High Priest of the Israelites, according to the Book of Exodus.
These stones were, at times, used to determine God's will in a particular situation (see Exodus 28:30).
According to kabbalah and ancient philosophy, ‘all powers can be found in the derivatives of all gems that matches these powers to the characteristics of their corresponding tribes.
Each Shammaim machine consists the Hosen stones.