Length, size and the shape of things effects the resonance that the object can produce. The length of a string on an instrument dictates the sound frequency it produces. What about crystals? If all things vibrate, then can crystals amplify that frequency? Some people believe this is true. Consider the effects of a wooden guitar- the vibration of the string by itself is barely audible, but with the resonance of the wooden body, the sound of the string is amplified. If the human body has a frequency, can this be amplified by bringing in other objects- like Gemstones? Hmm....
Crystals are Piezoelectric
This means that when put under pressure, a crystal may eject a small electric charge. Crystals are used in many devices to electrically measure pressure signals. Think of quartz watches. Even computers have a piezoelectric crystal in them. You do not have to worry about being shocked while wearing gemstones, but it is interesting to think about.
You know what else is piezoelectric?
Your BONES! Read more in this article
Even your bones use crystals to give them strength. Hydroxyapatite is what our bones make and it uses Apatite crystal!
Gemstones are Different from Rocks
Gemstones are minerals that have a characteristic chemical and physical composition, particularly a highly ordered atomic structure that is normally crystalline. Rocks are made of aggregates of minerals. Minerals can be represented by a chemical formula: like SiO2 (silicon dioxide-"silica" = quartz). Rocks do not have formulas. Crystals/Minerals grow in geometric shapes according to how the atomic structure fits together. Different minerals grow in different shapes. There are only seven geometrical patterns. When a quartz mineral grows and then stops or is "finished", it is called a termination point- this is the pointy end of a crystal that you see (if it wasn't cut).
How is Crystal different from Glass and "Glass-Crystal Stemware"?
Both glass and crystal gems are composed of silicon dioxide (SiO2). The difference is that in a crystal gemstone, the atoms are in a geometrical pattern called a crystalline lattice, and in glass, they are jumbled up. In "Crystal" dinnerware, there is no crystalline pattern of atoms. "Crystal" dinnerware is really just glass with Lead added to it- the real name is called Leaded Glass. The Lead content must be more than 24% to be termed "Crystal". Never leave liquids sit in crystal dinnerware for long periods of time and then drink it. Lead toxicity can result.
Colors of Gemstones- do they affect us?
I believe color can affect the brain. Some people might be more sensitive to it than others- or maybe others are just not aware of its affects on our brains. Color can help our moods. Also scientifically, the color of a gemstone is directly related to the minerals it is composed of. (Copper makes Turquoise blue, Iron turns things yellow and red etc) The color goes through and through- it is not like a painted or dyed article. We can think about how part of the electromagnetic spectrum- which is light- some gets absorbed by the gem and some bounces off to give our brains the color that we see. Each color has a unique Hertz/frequency. This is fun to think about. I like to intuitively pick which color suits me each day.
Color and Sound
One can match up the different wavelengths of sound and light to have the same Hertz. Here are some pictures: