Unlike sapphire or ruby, the importance of emerald extraction in secondary mines is low and often from primary deposits in grooves, veins and fissures and is done directly from the parent rock containing it
Emerald crystals from Brazilian mines Colombian quality emerald, which has significant amounts of iron, which increases the specific gravity and refractive index of light in this stone. Their guest mineral is in the form of a saw blade. The most important mines of Colombia are Shivore, Gashala Borbar, Casquez and Mozo. In all these mines there is no trace of host Minerals that existed before the growth of Emerald crystals.
Emerald crystals from Brazilian mines Colombian quality emerald: which has significant amounts of iron, which increases the specific gravity and refractive index of light in this stone. Their guest mineral is in the form of a saw blade. The most important mines of Colombia are Shivore, Gashala Borbar, Casquez and Mozo. In all these mines there is no trace of host minerals that existed before the growth of emerald crystals.
Like other minerals in this gemstone, it is formed from molten materials in the ground under hi gh pressure and heat, which can be found in granites, pegmatites (magma residues), schists and deposits. Unlike sapphire or ruby, the importance of emerald extraction in secondary mines is low and often from primary deposits in grooves, veins and fissures and is done directly from the parent Rock containing it.
Today the best types of Gemstone are obtained from Colombia. Lower quality varieties with medium to light color tones are obtained from Brazilian mines. Austria, India, Australia, South Africa, Egypt, the United States, Norway and Pakistan also have emerald mines.
Over the past few decades, the number of quality species in Zimbabwe, Zambia and Tanzania has also increased. Only the types that have the best quality are clean and flawless. Most of them have small joints and indentations from other minerals.
In the north of Russia, most of them are matte or yellow, and their quality type is very rare. Afghanistan's five-lion emeralds with crystal size (many over 100 carats) and good transparency compete with the best varieties found in Colombia that have had no analogues in the last 400 years. Recently, sources of this Stone have been observed in Ethiopia. In the following, we will get more acquainted with these mines and explain them.