So who actually decided that Gemstones have meaning?...

Well, the most probably scenario is that priests, shamans, and other spiritual leaders observed the effects of gemstones on people's lives and began to revere them. And this observation started thousands of years ago.

Indians practicing Ayurvedic medicine, Ancient Egyptians, Greeks, and Romans all held gemstones in high esteem for their proven (in their experience) ability to heal and have beneficial effects on the lives of those who used them.

The Bible mentions the use of gemstones in religious rituals. There are references to the use of gemstones in the context of religious rituals, such as in the description of the breastplate worn by the High Priest in the Book of Exodus in the Old Testament. The breastplate was believed to have been adorned with twelve gemstones, each representing one of the twelve tribes of Israel. Why would the Priests have done this if they didn't believe gemstones to have spiritual significance?

In Ayurvedic medicine gemstones are believed to have therapeutic properties and are used in various treatments and remedies.

Chinese medicine believes gemstones to have energetic properties that can affect the body's energy channels, or meridians. Native Americans eg the Navajo, have used turquoise for its healing and protective properties for thousands of years.

Is it possible that SO many people, SO many cultures, for SO long could be wrong? Do we really believe that our ancestors from thousands of years ago were not remotely intelligent?

Graham Hancock believes that ancient people were much more intelligent and advanced than is commonly believed - his web site will give you something to think about!

Final thought: Nikola Tesla (who was somewhat of a genius) said, "In a crystal we have clear evidence of the existence of a formative life principle, and though we cannot understand the life of a crystal, it is nonetheless a living being".

Crystals and humans both have electromagnetic fields (EMF's), which are the result of the electrical and magnetic forces generated by their atoms and molecules. These fields are not visible to the naked eye, but they can be measured and detected using specialized equipment.

When crystals and humans come into contact with each other, their electromagnetic fields can interact in various ways...but that's a whole different blog😉 Love Gx