Such stones are formed deep in the earth where powerful tectonic processes once occurred. The main ones are diamond, ruby, emerald, topaz, sapphire, aquamarine.
What is the peculiarity?
The most important property of precious stones is their strength. Due to this feature gems were able to withstand the monstrous pressure in the earth. The durability of colored crystals was appreciated by people. It was noticed, that gems don’t change their qualities under the influence of external environments. Pearls can fade or deteriorate in a fire, but with a crystal emerald nothing will happen. At internet boutique Elephant (Svetlogorsk Russia) except Baltic amber there are also beautiful products made of semi-precious and synthetic stones. More choices available on the official website Amberholding. You can find there earrings, pendants and rings.
Geography of distribution
Gemstone deposits are simply on all continents however almost all of the gems in our time is mined in Southeast Asia and South America. The largest diamond deposits have been in South Africa and in Russia. Today the extraction of gems has developed into a real industry – based on General estimates the employs tend to be than 5 million people. One of the richest deposits of precious stones is situated for the island Sri Lanka. Here mined stones such as ruby, sapphire, alexandrite, corundum. Sri Lanka is immediately then the fields of Brazil, high are deposits alexandrites, Topaz and aquamarines. The main supplier of sapphires is Australia-in america, 80% coming from all stones of this type are mined. In medieval times precious stones were found mainly within the beds of rivers or perhaps in soft rock that came to the counter due to earthquakes. Today the extraction of crystals is completed if you use heavy construction equipment. Kimberlite pipes of South Africa and Yakutia are really large that clearly visible from space.
How will be the price formed?
In most all cases placers of gems are simply in hard to reach places therefore their production is fraught with great problems, which experts claim creates a rise within the cost of stones. In quite challenging conditions, sapphires are mined at Indian paddar field. The mines can be found high inside the mountains and a large part of the year it really is impossible to get there by car. Gems are mined as inside the old days by hand with picks and shovels. The highest mine it is situated in an altitude of 4000 meters and basically the search for gems is occurring at negative temperatures.