The name of this stone is derived from the French word.
The more turquoise the smoother and larger, the more valuable it is. Also, the color of the stone changes from blue to pale yellow.
Turquoise is found in United State, Australia, Afghanistan and Iran. Turquoise Ajami is round, pure color (blue garlic) is used as the most expensive turquoise type to make a ring.
The turquoise is also called a shaggy; this type of turquoise forms a mixture of several turquoise seeds inside the rock.
Opal or Agate (another kind of quartz) is another semi-precious stone; ordinary agata or cobbler is made from regular calcined layers and most amethyst crystals are found in the center. The chemical composition of the opal is silica, but sometimes elements such as Al, Fe, Mg, Ca, Ni, Cr, are next to it.
It is opacity is fine and it’s color is clear.
The opal is translucent opaque and has a glassy finish. The opal is white to dark gray and black, yellow to red, green and blue and is famous among the second grade stone. The best is red, yellow and white.
Pearl is a gem of white and brilliant. The pearl is formed inside the oyster of some of the two-ply clams; when an external body, such as sand particles is placed inside the oyster, the animal secretes layers of the organic materials of the conicillin and carbonates around the outer body, which ultimately pearls the shape of the pearl is often close to the spheroid. The pearl has been hunted for thousands of years from the coast of the Persian Gulf, Sri Lanka, The red sea, India, New Zealand, United States, Britain, France.
Lizard (Azure) is considered to be semi-precious stone. This rock is made up of several composite minerals. The most important part of this rock is lashorite (25-40%); lashorite contains sodium, aluminum, silica, oxygen, sulfur and chlorine. In addition to laser gate, calcite (in the form white veins), sudidity and pyrite (in golden color) are also the elements that make up the lazuli; the lower the white veins of the lazuli (calcite) and the more golden (pyrite) streaks the lagger will be more valuable. Also, the original lagger turns blue when it comes to flame. This stone is well polished and is considered as a metamorphic rock. Badakhshan stone mine located in the Kuh Kok Mountains of Afghanistan is one of the most important, best known lagoon mine in the world.
The ruby is the second known natural mineral know to be difficult. The accompanying minerals are calcite, feldspar, mica and garnet. in the gem trade, sapphire is called blue, but the fried garlic (know as pigeon blood) is most valuable.
these rubies from in the acidic magma and the inner and outer boundaries. The ruby has been found in Burma, Sri Lanka, Africa, India and Kazakhstan.
Topaz is the hardest silica mine and one of the hardest minerals in nurture with a hardness 8.
The color is from golden brown to yellow. The important deposits of yellow topaz in Serbia and pink crystals in Russia and blue crystals are found in Ukraine, Brazil and Iran.
The stone’s name derives (via Latin: molochītis, Middle French: melochite, and Middle Englishmelochites) from Greek Μολοχίτης λίθος molochitis lithos, “mallow-green stone”, from μολόχη molōchē, variant of μαλάχη malāchē, “mallow”.The mineral was given this name due to its resemblance to the leaves of the mallow plant.
Malachite was extensively mined at the Great Orme mines in Britain 3,800 years ago using stone and bone tools. Archaeological evidence indicates that mining activity ended around 600 B.C.E with up to 1,760 tonnes of copper being produced from the mined Malachite.
Archaeological evidence indicates that the mineral has been mined and smelted to obtain copper at in Israel for over 3,000 years. Since then, malachite has been used as both an ornamental stone and as a gemstone.
In ancient Egypt the colour green (wadj) was associated with death and the power of resurrection as well as new life and fertility. Ancient Egyptians believed that the afterlife contained an eternal paradise which resembled their lives but with no pain or suffering, and referred to this place as the ‘Field of Malachite’.