The mineral labradorite is a calcium-sodium-aluminum-tectosilicaat having the chemical formula (Ca, Na) (Si, Al) 4O8. It belongs to the feldspars. The colorless, white, gray or pale green labradoriet has a glass luster, a white stripe color, according to a perfect cleavage crystal plane , and a good according to . The average density is 2.69 and the hardness is 7. The crystal system is triclinic, and the mineral is either radioactive or magnetically. The characteristic iridescence that labradoriseren is called, is caused when the light struck from microscopic crystals of various dark minerals that lie on the cleavage planes. Labradorite usually comes shapeless or grainy for; the mineral is rarely crystals. Labradorite is the precious gemstones that show some iridescence undoubtedly the best known. When the stone is judiciously cut, the play of colors is even better advantage. But also on the rough chunks can see the beautiful labradoriseren often. There are few minerals that change color as strong as labradorite. The name of the mineral labradorite is derived from the Labrador Peninsula in Canada, where it was first described. The stone was in 1780 on the east coast of the Labrador Peninsula discovered by a priest and named by him to the island. He found a large number of boulders with a striking gray color that changed when turning color in dark greens and shades. This discovery aroused great interest among scientists at that time and it was established that there was talk of a natronkalkveldspaat or plagioclase. Labradorite is a common feldspar in metamorphic and igneous rocks as pegmatite. It is part of deplagioklaas series (albite-anorthite). The type locality of labradorite is Canada's Labrador Peninsula. Deposits are found more in Australia, Madagascar, Mexico, Russia, the United States and Finland.
The most beautiful minerals, fossils and gemstones from Madagascar Madagascar, officially the Republic of Madagascar and previously known as the Malagasy Republic, is an island country in the Indian Ocean, off the southeastern coast of Africa. The nation comprises the island of Madagascar (the fourth-largest island in the world), as well as numerous smaller peripheral
islands. Amongst it's famous spot for diving and swimming it is famous for it's high quality gemstones that are extracted from the soil and rocks. We at Timmersgems can say with proud that we are the second largest importer for Madagaskian gemstones in Europe just after a French company. Anualy we have at least 3 large containers filled with the most beautiful gemstones, minerals and bufallo horns. If you take a look in our webshop and showroom you will come accross great Labradorite, Amethyst, Citrine, Rose Quartz and many many other great ones. We are doing business with 17 small family businesses on the island and this way we can guarantee you the best prices in the market for best gemstones and minerals. Also we support these families since we started our business 35 years ago we are almost in love with the island,it's people and the products. Every year it is a great thing to visit the island and find the best stones for you. Also we support all the small family businesses and their children to give them a good education, also we support in local infra structure an water transportation. Madagascar's natural resources include a variety of unprocessed agricultural and mineral resources. Agriculture, including raffia, fishing and forestry, is a mainstay of the economy. Madagascar is among the world's principal suppliers of vanilla, cloves and ylang-ylang. Other key agricultural resources include coffee, lychees and shrimp. Key mineral resources include various types of precious and semi-precious stones, and Madagascar currently provides half of the world's supply of sapphires, which were discovered near Ilakaka in the late 1990s. The island also holds one of the world's largest reserves of ilmenite (titanium ore), as well as important reserves of chromite, coal, iron, cobalt, copper and nickel. Several major projects are underway in the mining, oil and gas sectors that are anticipated to give a significant boost to the Malagasy economy. These include such projects as ilmenite and zircon mining from heavy mineral sands near Tôlanaro by Rio Tinto Madagascar is a very poor country witgh a lot of flora and fauna, On Madagaskar you can find 400 plants and animals you will never find anywhere in the world. Also the minarals blue celstite, Labradorite and polychrome & Oceanjasper are found only on Madagascar.
|Dimensions||600 - 1500 gram|