Sapphire
Sapphire is a single crystalline form of aluminum oxide (Al2O3), a mineral known as corundum. The corundum group includes pure aluminum. Small amounts of other elements such as iron, titanium and chromium give blue, yellow, pink, purple, orange, or green to the blue sapphire. Sapphire types include very hard stones that have a value of 9 from Scale 10 Mohs. The best sapphires from Sri Lanka are called Safir Ceylon and from Khasmir (India) called Royal Blue Khasmir Sapphire. Where of the two types of Sapphire is the most sought after because of its excellent quality.
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Chemical formula: Al2O3
Color: White, colorless, Blue, Green, Yellow, Orange, Brown, Pink, Purple, Gray, Black, colorful Hardness: 9 Crystal system: Hexagonal Refractive index: 1.76-1.77 SG: 3.9-4.1 Transparency: Transparent to opaque Double Refraction: 0,0008 Luster: Vitreous for adamantine Cleavage: None, but may indicate separation Mineral Class: Corundum |
How to Determine Sapphire Quality and Prices
Sapphire is the most valuable and valuable blue gemstone. This is a highly desirable gemstone because of its excellent color, hardness, durability and luster. In the trade of gems, Sapphire without color prefix refers to the blue variations of the mineral corundum. However, the term Sapphire includes all other gem varieties and colors of corundum as well, including Ruby, a variety of corundum red, which has its own name since ancient times.
The most valuable color of Sapphire is the blue color of corn flowers, known as Kashmir Sapphire or Cornflower Blue Sapphire. Another very valuable form of sapphire is the very rare, pink orange known to Safir Padparadscha. The exotic type of sapphire, known as Change Sapphire, displays different colors depending on lighting. In natural light, Replacing the Sapphire Color is blue, but in artificial light, it is violet. (This effect is the same famous phenomenon in Alexandrite gemstones). Sapphire and yellow have recently become very popular, and are now often seen in jewelry.
Sapphire is the most valuable and valuable blue gemstone. This is a highly desirable gemstone because of its excellent color, hardness, durability and luster. In the trade of gems, Sapphire without color prefix refers to the blue variations of the mineral corundum. However, the term Sapphire includes all other gem varieties and colors of corundum as well, including Ruby, a variety of corundum red, which has its own name since ancient times.
The most valuable color of Sapphire is the blue color of corn flowers, known as Kashmir Sapphire or Cornflower Blue Sapphire. Another very valuable form of sapphire is the very rare, pink orange known to Safir Padparadscha. The exotic type of sapphire, known as Change Sapphire, displays different colors depending on lighting. In natural light, Replacing the Sapphire Color is blue, but in artificial light, it is violet. (This effect is the same famous phenomenon in Alexandrite gemstones). Sapphire and yellow have recently become very popular, and are now often seen in jewelry.
Queen's Sapphire Jewelry United Kingdom
Sapphire (not including blue) which is often referred to by the same name as a popular gemstone of colors with an "oriental" prefix added to it. For example, the green Sapphire is called "Emerald Oriental". The practice of applying names from different gemstones to identify sapphires is misleading, and these names are no longer used. What was once called "Oriental Emerald" is now called "Green Sapphire". The same applies to all other color varieties from Sapphire. However, the word "Sapphire" in the plain context only refers to Sapphire blue, unless the prefix color is specified. Color sapphires other than blue are often called "luxury" in the gem trade.
Sapphire often contains small inclusions of small Rutile slim needles. When present, this inclusion reduces the transparency of the stone and is known as silk. When in solid, parallel grouping, this inclusion can really improve by allowing polished Sapphire to show asterism. Sapphire gems featuring asterism are known as Sapphire Star (Star Sapphire), and this can be very valuable. Sapphire Star is on six ray stars, although twelve ray stars are also known.
Sapphire often contains small inclusions of small Rutile slim needles. When present, this inclusion reduces the transparency of the stone and is known as silk. When in solid, parallel grouping, this inclusion can really improve by allowing polished Sapphire to show asterism. Sapphire gems featuring asterism are known as Sapphire Star (Star Sapphire), and this can be very valuable. Sapphire Star is on six ray stars, although twelve ray stars are also known.
Grade Quality and Color Sapphire
Sapphire is a tough and durable gem, and the only natural gemstone harder than sapphire is Diamond (Diamond). Even so, Sapphire is still awaiting chipping and breaking if handled rudely, and care must be taken to ensure it is properly handled. Sapphire was first synthesized in 1902. The process of creating synthetic sapphires is known as the Verneuil process. Only experts can distinguish between natural and synthetic sapphires.
Sapphire is one of the most popular gemstones, and is widely used in jewelry. Good colored sapphires in blue and excellent transparency can reach several thousand dollars in rust. Various blue are most often used in jewelry, but yellow, pink, and orange "crush" has recently become very popular. Green and light Blue Sapphire is also known, but it is less commonly used in jewelry. Frosted Black Sapphire also used small gemstones. Sapphire is used in all forms of jewelry, including bracelets, necklaces, rings and earrings. It is used both as a central gemstone in pendants and rings, as well as secondary stones for other gemstones such as Diamonds. Bintang Safir is polished as cabochons, and, if clear, is very valuable. The rare variety of pink-orange, known as Padparadscha, can be even more valuable than good Sapphire blue. Blue Sapphire is sometimes carved into cameos or small numbers, especially less transparent material. Sentetis Sapphire is often used as a cheap substitute for natural ingredients.
Sapphire is one of the most popular gemstones, and is widely used in jewelry. Good colored sapphires in blue and excellent transparency can reach several thousand dollars in rust. Various blue are most often used in jewelry, but yellow, pink, and orange "crush" has recently become very popular. Green and light Blue Sapphire is also known, but it is less commonly used in jewelry. Frosted Black Sapphire also used small gemstones. Sapphire is used in all forms of jewelry, including bracelets, necklaces, rings and earrings. It is used both as a central gemstone in pendants and rings, as well as secondary stones for other gemstones such as Diamonds. Bintang Safir is polished as cabochons, and, if clear, is very valuable. The rare variety of pink-orange, known as Padparadscha, can be even more valuable than good Sapphire blue. Blue Sapphire is sometimes carved into cameos or small numbers, especially less transparent material. Sentetis Sapphire is often used as a cheap substitute for natural ingredients.
