Jasper the Tetractys of the Decad

Tetractys is a triangular representation of the 3x3 square grid described in Revelation 21:16 and a more detailed structure of each of the eight Bagua trigrams. It is base-10 in a a base-8 vessel.

The three sides of the equilateral triangle are the three digits in 3 bits, and the eight trigrams are eight equilateral triangles. The hexagram called Bagua is eight tetractys triangles arranged into an octagon.

The ten points in the Tetractys are in reality the ten digits in the decimal numerical system, hence the reason the Tetractys is also called decad.

Decad = Ten

Tetractys is a triangular arrangement of the ten decimals digits. It is the ten decimals summed into a triangle. The Decimal numbers are 0, 1, 2, 3, 4, 5, 6, 7, 8 and 9.

Tetractys = Sum of ten decimals

               = 0 + 1 + 2 + 3 +  4+ 5 + 6 + 7 + 8 + 9

               = 45

The perfect square, the 3x3 square grid described in Revelation 21:16, is 45. The nine small squares are numbered 1 to 9.

Therefore, the nine small squares are numerically 1, 2, 3, 4, 5, 6, 7, 8 and 9.

Square = 1+2+3+4+5+6+7+8+8

           = 45 (tetractys)

Consequently,

Triangle (tetractys) = 45 (square)

As tetractys is the triangular structure of the square so the hexagram is of the cube.

Hexagram (two triangles) = Yin and Yang

                                           = 69

                                           = 6 and 9

                                           = 6x9

                                           = 54 (cube)

Jasper, the stone in Revelation 21:11, is 69 (Yin and Yang).

Jasper = 69

           = 6 and 9

           = 54 (cube)

Tetractys was the holy of holies in Pythagoreanism, since it is the cube Solomon constructed in the first temple and the stone Zerubbabel placed in the second temple. 

According to Wikipedia, "The Tetractys [also known as the decad] is an equilateral triangle formed from the sequence of the first ten numbers aligned in four rows. It is both a mathematical idea and a metaphysical symbol that embraces within itself—in seed like form—the principles of the natural world, the harmony of the cosmos, the ascent to the divine, and the mysteries of the divine realm. So revered was this ancient symbol that it inspired ancient philosophers to swear by the name of the one who brought this gift to humanity."