Quartz is the singular mineral who's chemical bond creating it's crystalline lattice structure holds and vibrates to every single color of the Hz spectrum. This is true even in it's purest form as clear - rock crystal.
We know this even when we cannot see it because there Gemological equipment which seeks this. Remember that polariscope I mentioned earlier? This uses more than one polarizing filter layered upon one another to fracture and hone white light entering the gem. The gem then displays which colors its chemical structure vibrates to.
Or for me, I am looking at the molecular heart of a gem, and Quartz's heart is a rainbow.
The image below is taken through my polariscope of the Quartz Wing necklaces in offering.
As Quartz's molecular crystal lattice forms, its tetrahedral (a double tri-sided pyramid) chemical structure repeats the sequence of the Hz spectrum upward and out.
You see the repetition within the structure is predictable and complete. One frequency after another. This quality endows the Quartz with an peerless ability to be tuned and maintain frequency, this is the bedrock of their utility in everything from cell phones to satellites.
This quintessence - the precise timing and frequency stability of Quartz is unparalled, bringing every color together in synchronicity, bringing communication across all life on earth and beyond from frequency to human.
Quartz is the messenger of the universe.
The Greek and Hebrew word for messenger is "Angelos, Angel. Quartz is the harbinger of harmony. It's glow is the emanating the light of sympathetic resonance, that is reflective of that of a choir, each holding their own note in a harmonic convergence.
One luminous Double Terminated Quartz on 1.5 mm 14kt chain. A single hand carved carved golden "conduit" off center. Necklace measures 19inches total with a ring at 16 inches for choice of length.