Topaz 2.6.4 Crack
Astri Hirons
Topaz is a silicate mineral of aluminium and fluorine with the chemical formula Al2SiO4(F,OH)2. It is used as a gemstone in jewelry and other adornments. Common topaz in its natural state is colorless, though trace element impurities can make it pale blue or golden brown to yellow orange. Topaz is often treated with heat or radiation to make it a deep blue, reddish-orange, pale green, pink, or purple.
Nicols, the author of one of the first systematic treatises on minerals and gemstones, dedicated two chapters to the topic in 1652.[12] In the Middle Ages, the name topaz was used to refer to any yellow gemstone, but in modern times it denotes only the silicate described above.
Many English translations of the Bible, including the King James Version, mention topaz. However, because these translations as topaz all derive from the Septuagint translation topazi[os], which referred to a yellow stone that was not topaz, but probably chrysolite (chrysoberyl or peridot), topaz is likely not meant here.[13]
An English superstition also held that topaz cured lunacy.[14] The ancient Romans believed that topaz provided protection from danger while traveling.[15] During the Middle Ages, it was believed that attaching the topaz to the left arm protected the owner from any curse and warded off the evil eye. It was also believed that wearing topaz increased body heat, which would enable people to relieve a cold or fever.[16] In Europe during the Middle Ages, topaz was believed to enhance mental powers.[17]
Topaz is a gemstone. In cut and polished form, it is used to make jewelry or other adornments. It also has other uses. Orange topaz, also known as precious topaz, is the conventional birthstone for November, the symbol of friendship and the state gemstone of the U.S. state of Utah.[18] Blue topaz is the state gemstone of the US state of Texas.[19]
Topaz in its natural state is colorless, often with a greyish cast. It also occurs as a golden brown to yellow which makes it sometimes confused with citrine, a less valuable gemstone.[20] The specific gravity of all shades of topaz, however, means that it is considerably heavier than citrine (about 25% per volume) and this difference in weight can be used to distinguish two stones of equal volume. Also, if the volume of a given stone can be determined, its weight if it were topaz can be established and then checked with a sensitive scale. Likewise, glass stones are also much lighter than equally sized topaz.
A variety of impurities and treatments may make topaz wine red, pale gray, reddish-orange, pale green, or pink (rare), and opaque to translucent/transparent. The pink and red varieties come from chromium replacing aluminium in its crystalline structure.
Imperial topaz is yellow, pink (rare, if natural) or pink-orange. Brazilian imperial topaz can often have a bright yellow to deep golden brown hue, sometimes even violet. Many brown or pale topazes are treated to make them bright yellow, gold, pink, or violet colored. Some imperial topaz stones can fade on exposure to sunlight for an extended period of time.[21][22] Naturally occurring blue topaz is quite rare. Typically, colorless, gray, or pale yellow and blue material is heat treated and irradiated to produce a more desired darker blue.[22] Mystic topaz is colorless topaz which has been artificially coated via a vapor deposition process giving it a rainbow effect on its surface.[23]
Although very hard, topaz must be treated with greater care than some other minerals of similar hardness (such as corundum) because of a weakness of atomic bonding of the stone's molecules along one or another axial plane (whereas diamonds, for example, are composed of carbon atoms bonded to each other with equal strength along all of its planes). This gives topaz a tendency to break along such a cleavage plane if struck with sufficient force.[24]
Topaz has a relatively low index of refraction for a gemstone, and so stones with large facets or tables do not sparkle as readily as stones cut from minerals with higher refractive indices, though quality colorless topaz sparkles and shows more "life" than similarly cut quartz. When given a typical "brilliant" cut, topaz may either show a sparkling table facet surrounded by dead-looking crown facets or a ring of sparkling crown facets with a dull well-like table.[25] It also takes an exceptionally fine polish, and can sometimes be distinguished from citrine by its slippery feel alone (quartz cannot be polished to this level of smoothness).[26]
Another method of distinguishing topaz from quartz is by placing the unset stone in a solution of bromoform or methylene iodide. Quartz will invariably float in these solutions, whereas topaz will sink.[26]
Brazil is one of the largest producers of topaz,[27] some clear topaz crystals from Brazilian pegmatites can reach boulder size and weigh hundreds of pounds. The Topaz of Aurangzeb, observed by Jean Baptiste Tavernier weighed 157.75 carats (31.550 g).[28] The American Golden Topaz, a more recent gem, weighed 22,892.5 carats (4,578.50 g). Large, vivid blue topaz specimens from the St. Anns mine in Zimbabwe were found in the late 1980s.[29] Colorless and light-blue varieties of topaz are found in Precambrian granite in Mason County, Texas[30] within the Llano Uplift. There is no commercial mining of topaz in that area.[31] It is possible to synthesize topaz.[32]
You really shouldn't be using ML software on old laptops without a dedicated gpu. Doesn't make sense. I use both topaz and dxo, on 42mp files and processing time is 10 to 60s on a two year old, upper midrange card. I batch process all my photos before culling - easily in the thousands due to wildlife photography, and it's fine.
The Whitney Flame Topaz, named in honor of the donor Coralyn Wright Whitney, originated from the Capao Mine in the famous Ouro Preto area in Minas Gerais, Brazil. The rough crystal weighed over 200 carats and was originally cut to just over 50 carats. Now at 48.86 carats, this natural red topaz is considered one of the finest Imperial Topaz gems in the world. Not only is it large in size and rare with its vibrant red color, but this pear-shaped gem exhibits incredible clarity and stunning brilliance. Mined in the early 1970s, it resided in a private collection before it was acquired for the National Gem Collection.
The color of Imperial Topaz, typically golden-orange to orange-red, is extremely rare and highly-prized. Shades of pink, purple, and red are even more rare. Red, of course, is one of the most coveted topaz colors, and only one to two percent of the topaz mined in the Ouro Preto area is gem-quality, making the importance of the Whitney Flame all that more extraordinary. In Brazil, the Capao Mine is the largest Imperial Topaz mine and the only mine aside from the Vermillion Mine to produce red Imperial Topaz.
Topazes are typically colorless, but different colors form when you mess with the chemistry. For instance, a topaz can turn a light blue due to surrounding radiation. Deeper blues are usually the result of a bit of human interference. Hate to break your heart on this one, but your bright blue topaz necklace is likely due to added radiation! However, some other amazing colors like orange, amber, pinks and greens can happen naturally. Rare, but it can happen.
Many natural topaz crystals are shaped like a chisel, a distinctive shape that helps scientists identify the stone. But something weird and wild happens in older pegmatites. Those perfect crystal faces start to get carried off piece by piece as the fluids in the rock basically eat the topaz. Nature carves away at the faces, leaving behind beautiful twisted formations and deep gouges in the gemstone. Scientists call this process etching or dissolution and it can make identifying a mineral really difficult!
We have a lot of amazing topaz here at the Museum, but nothing can compare to the Dali topaz on display in Coors Gems and Mineral Hall. Weighing in at a whopping 10,588ct (over 4 pounds), this Brazilian stone was once owned by the surrealist painter Salvador Dali. This massive topaz sports nearly 130 facets, creating a dazzling display of light. Far too big to wear, Dali housed his topaz in a custom gold chalice. Talk about bling! The Dali topaz has certainly earned its own special case in our gemstone exhibit since its donation in 1976.
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