Garnet Garnet is a group of minerals that have been used since the Bronze Age as gemstones and abrasives. Today, it is widely known as the birthstone for January. Garnets are most often seen in red, but are available in a wide variety of colors spanning the entire spectrum. The name “garnet” comes from the […]
The Seljuq Turks, the Safavids, the Afsharids, and the Qajars had splendorous thrones in their courts, but themost splendorous of all these thrones was the Peacock Throne of Nadir Shah, that was acquired by him during the Indian campaignof 1739 against the Mogul Empire.Read More… [Source: Gemstones,gemstone Jewelry,Gifts,Diamonds Internet Stones.COM]
ChrysopraseChrysoprase (also chrysophrase) is a gemstone variety of chalcedony (fibrous form of quartz) that contains small quantities of nickel. Its color is normally apple-green, but varies to deep green. It is cryptocrystalline, which means that it is composed of crystals so fine that they cannot be seen as distinct particles under normal magnification. This sets […]
The Museum of The Treasury of National Iranian Jewels contains one of the world’s largest, dazzling and most precious collection of jewels, consisting of pieces originating from several dynasties that ruled Iran, over 25 centuries.Read More… [Source: Gemstones,gemstone Jewelry,Gifts,Diamonds Internet Stones.COM]
Flux-grown synthetic emeralds fluoresce a dull red with long waveultraviolet light, due to an indicator added during the process of synthesizing the emerald, whereas natural specimens do not.Synthetic emeralds are often referred to as “created”, as their chemical and gemological composition is exactly same as its natural counterparts. The Federal Trade Commission (FTC) has very […]
Hydrothermal synthetic emeralds have been attributed to IG-Farben, Nacken, Chatham and others but the first satisfactory commercial product was that of Johann Lechleitner of Inbruck, Austria, which appeared on the market on the 1960’s. These stones were initially sold under the names “Emerita” and “Symeralds” and they were grown as a thin layer of emerald […]
Emerald is a rare and valuable gemstone and, as such, it has provided the incentive for developing synthetic emeralds. Both hydrothermal and flux-growth synthetics have been produced and a method has been developed for producing an emerald overgrowth on colorless beryl. The first commercially successful emerald synthesis process was that of Carroll C. Chatham. Because […]
Emeralds in antiquity were mined by the Egyptians and in Austria as well as Swat in northern Pakistan.A rare type of emerald known as a trapiche emerald is occasionally found in the mines of Colombia. A trapiche emerald exhibits a “star” pattern; it has raylike spokes of dark carbon impurities that give the emerald a […]
Concise article on Agra Diamond,the best I have seen, straight to the point and comprehensive.Read More… [Source: Gemstones,gemstone Jewelry,Gifts,Diamonds Internet Stones.COM]
EmeraldEmerald (Be 3Al 2(SiO 3) 6) is a variety of the mineralberyl, colored green by trace amounts of chromium and sometimes iron. It is highly prized as a gemstone and by weight is the most valuable gemstone in the world, although it is often made less so by inclusions, which all emeralds have to some […]