gemstone also called a gem, fine gem, jewel, precious stone, or semi-precious stone is a piece of mineral crystal which, in cut and polished form, is used to make jewelry or other adornments.
The "Multi Stone" is a mineral stone which the properties of all kinds of stones are gathered in it. Producing, turning, and mounting it on jewelry are being carried out incooperation with the Sargon Limited Liability Company and Thai and European companies, in multilateral and international cooperation.
ruby is a pink to blood-red coloured gemstone, a variety of the mineral corundum . ruby is one of the traditional cardinal gems, together with amethyst, sapphire, emerald, and diamond.
emerald is a gemstone and a type of the mineral beryl colored green by trace amounts of chromium and sometimes vanadium. emerald in antiquity were mined in Egypt at locations on Mount Smaragdus since 1500 BCE.
turquoise is an opaque, blue-to-green mineral that is a hydrated phosphate of copper and aluminum. turquoise has a lower-than-ideal hardness and durability for use in certain types of jewelry.
sapphire is a precious gemstone, a type of the mineral corundum, include of aluminum oxide with trace amounts of elements such as iron, titanium, chromium, vanadium, or magnesium.
peridot is gem-quality olivine and a silicate mineral. its green color is affiliate on the iron contents within the structure of the gem. the molecular structure of peridot consist of isomorphic olivine, silicate, magnesium and iron in an orthorhombic crystal system.
diamond is one of the best-known and most sought-after gemstones. they have been used as decorative items since ancient times. in the middle ages, the gemstone was considered a stone that could provide healing powers, curing depression and opening the heart.
garnets are a category of silicate minerals that have been used since the Bronze Age as gemstones and abrasives. all species of garnets possess similar physical properties and crystal forms, but differ in chemical composition.
topaz is a silicate mineral of aluminum and fluorine. topaz crystallizes in the orthorhombic system, and the crystals are often prismatic terminated by pyramidal and other faces.
Goldstone is a glossy man-made colored glass that contains many components, smooth, face and highly reflective. The final product is polished and polished into beads, sculptures or other artifacts suitable for semi-precious stones, and in fact Goldstone is often mistaken or misrepresented as a natural material.
agate is a common stone formation, consisting of chalcedony and quartz as its main components, consisting of a wide variety of colors. agates are primarily formed within volcanic and metamorphic stones.
Howlite is a borate mineral. This stone may be known as an imitation gemstone because it can be painted with different colors and looks like semi-precious gemstones such as turquoise and coral. Howlite is often inexpensive, but it has many features that make it a popular gemstone in jewelry.
The mineral magnetite is iron oxide (Fe3O4), which is found in all three igneous, metamorphic and sedimentary rocks. This stone is often extracted from iron ore. Magnetite is also a mineral with the highest amount of iron (72.4%).
lapis lazuli, or lapis for short, is a deep-blue metamorphic stone used as a semi-precious stone that has been prized since antiquity for its intense color.
Hematite is one of the most abundant minerals found on the earth's surface and in shallow crust. Hematite is a type of iron oxide with the chemical composition Fe2O3. This rock is a common rock-forming mineral that is often found in sedimentary, metamorphic and igneous rocks.
jade refers to an ornamental mineral, often known for its green types, though appears naturally in other colors as well, especially yellow and white. jade can refer to either of two different silicate minerals: nephrite, or jadeite.
Moissanite is said to be a gemstone and was born from the stars. Moisinite flashes, indicating a fiery rainbow. Moissanites are very unique and brilliant and are highly regarded for their cost-effectiveness. This gemstone is completely transparent and shines more than a diamond.
yellow sapphire is a gem of the corundum family and is a twin of ruby and blue sapphire. it is available in yellow, golden and orange colors. the highest quality is known to be of lemon-yellow color. the color in yellow sapphire is of iron and titanium.
Citrine is a clear quartz, pale yellow and brownish orange, which is rare in nature. In the past, the color of its sobriety was confused with topaz. Citrine is the best-selling yellow to orange gemstone due to its attractive color, plus durability and affordability. Citrine can be an attractive option not only for topaz, but also for sapphire.
opal is a hydrated amorphous form of silica. because of its amorphous character, it is classed as a mineraloid, unlike crystalline forms of silica, which are classify as minerals.
Alexandrite is known as "Emerald by day, ruby by night" because it has one of the most dramatic color changes among gemstones, such as green in sunlight and red in incandescent light. The very precious habit of alexandrite color change is caused by the presence of minor impurities in the element chromium. The most desirable Alexandrite colors are those that have a very clear color change.
Zultanite is a precious mineral from the Diaspora that is mined in the Albir Mountains in southwestern Turkey. The color of Zultanite varies between yellowish green, light gold and purple pink, depending on its light source.
amethyst is a violet variety of quartz. the name comes from a greek word, a refered to the belief that the stone protected its owner from drunkenness. the ancient greeks wore amethyst and carved drinking vessels from it in the belief that it would prevent intoxication.
Amber is a fossilized tree resin that has been appreciated for its color and natural beauty since Neolithic times. Much valued from antiquity to the present as a gemstone, amber is made into a variety of decorative objects.
Aquamarine, named for the Latin phrase "water of the sea", is the blue to blue-green variety Beryl. Beryl also contains other gem varieties, including Emerald, and some lesser known varieties such as Morganite and Heliodor.