?What is topaz
The name "topaz" is usually derived (via Old French: Topace and Latin: Topazus) from the Greek Τοπάζιος (Τοpáziοs) or Τοπάζιον (Τοpáziοn), from Τοπαζος, the ancient name of St. John's Island in the Red Sea which was difficult to find and from which a yellow stone (now believed to be chrysolite: yellowish olivine) was mined in ancient times; topaz itself (rather than topazios) was not really known before the classical era. Ancient Sri Lanka (Tamraparni) exported native oriental topazes to Greece and ancient Egypt, which led to the etymologically related names of the island by Alexander Polyhistor (Topazius) and the early Egyptians (Topapwene) - "land of the Topaz". Pliny said that Topazos is a legendary island in the Red Sea and the mineral "topaz" was first mined there. Alternatively, the word topaz may be related to the Sanskrit word तपस् "tapas", meaning "heat" or "fire"
many ancient civilizations believed that topaz was touched by the sun and turned yellow. the garden of eden in the holy book has been mentioned several times in its name. egyptians know their stone as the symbol of the sun, the ancient greeks believed it was magic. romans believed that this stone increases intelligence and fidelity and used it to treat bloodshed and asthma. brazil has become a symbol of dentists
for a long time, For a long time people think that topaz always appear as yellowstone, but with the start of dedicated studies on topaz, scientists found that topaz is also visible in red, blue and even a few other colors. quarries of this stone is in sri lanka , brazil, mexico, america, burma, australia, japan, russia, northern ireland and even in iran
The chemical composition of this stone is aluminum fluorine and silicate, and its synthetic synthesis is possible. Topaz gemstone is transparent to semi-transparent with glass gloss. This gem has crystalline impurities, sometimes a comet
The way to form more topaz is that in the last stages of cooling the magma is formed and crystallizes and is mainly associated with minerals of tourmaline, cassiterite, apatite, fluorine and braille. Ribbed beds, rhylites and coarse gravel pegmatite rocks can contain crystals of this gem
These minerals, which ordinary people's geologists familiar with, are often confused with thirty (quartz type) or synthetic products and glass. In fact, the thirteenth is a quartz-type family of Amitis, which turns yellow into a high temperature and is called the golden topaz. For this reason, they sometimes call it "precious topaz" to distinguish it
Topaz is one of the most popular gemstones in the world with emerald, diamond and ruby
The stone is available in a wide range of colors, but its yellow golden color, which is famous for royal topes, is more expensive than the rest of the colors. Topaz in blue is the most popular member of the topaz family, which is due to its glittering color. Topaz is also one of Texas's most popular Texas cities in the United States. In fact, Topaz is the gem of this state. Every state in the United States has a gouvername as a symbol
Topaz is one of the hardest gemstones in the world. It has been created as a crystalline mineral in various granite rocks and lava flows. The topaz, in normal condition, is usually colorless and transparent. The presence of impurities and chromium causes color variations that vary in pale, brown and gray colors in green, violet, and pink. Most places where topaz are extracted are Germany, Nigeria, Republic of Italy, Norway, Sweden, Pakistan, Afghanistan, Japan and Brazil. Topaz can be in Crystal
Topaz color chart
Blue Topaz Color Chart
Sky Blue Topaz: Sky Blue comes clean, clear and delicate blue color just resembles the the color of the sky on a cloudless day. It pleases to those who like light colors and airy spaces. Technically, Sky Topaz is a white topaz which has been exposed to gamma- rays to change the color of the gemstone into light blue
Gemstones are exposed to gamma-rays within a gamma cell containing the radioactive material Cobalt 60 which emits gamma-rays. The rays generated are very penetrating and produce uniform color to the specimen. For producing a Swiss Blue, intense doses of gamma-rays is required for the first 2-3 hours subsequently, the dose can be reduced
Without a doubt, Sky Topaz is the most affordable gemstone in the market today. Its pleasing and spirit-lifting light blue color gives you the look of Aquamarine but at very pocket-friendly price tag. The Sky Topaz ranges between 0.50$-2$ per carat. Consumer market of light blue colored topaz is Europe
Linear accelerators are used at high energies to accelerate electrons. The electrons are forced to pass through by electrically deflected zigzag pattern so the whole specimen holder is exposed to the beam of electrons. This method is complex, expensive to build, expensive to operate and must be well-shielded. More importantly, the excessive heat produced during the process is a cause of major worry because too much heat can crack the specimen. During this radiation process, the samples are often cooled by running cold water. Due to the low penetration and coloration there is more heat at the surface. The penetration depth can be increased but it can result into high radioactivity. The only advantage of using this radiation method is that it can produced treated topaz by increasing the doses to tens of thousands of mega-rads. While, in the case of gamma-rays to achieve this level of energy it may take several months. The color produced in linear accelerator is brown and blue.
Swiss Topaz is one of the prettiest and most famous members amongst the Topaz family. It has a vivid blue color which is darker then the color Sky Topaz and lighter then London Topaz. The price starts from 1.5$ per carat. The main consumer markets of Swiss Blue are U.S.A, Asia and Europe
London Blue Topaz: London Blue is a white topaz which has been exposed in a nuclear reactor to change the color to a saturated and deep blue. Many of these have a slightly greenish tone when viewed from certain angles
Neutrons produced in the nuclear reactor can also change the color of pure topaz crystals. They have the excellent penetration so, there is no problem of surface heating and color produced by neutrons is deep and uniform. The color produced by neutrons is often dark to those produced by electrons. Thats why, London Blues are also referred as ‘Inky’ and ‘Steely’ Topaz.
In case of blue color, more saturated blue color tends to have more value because the exactly look like Tanzanite. So, in Topaz the London Blue is regarded as the most valuable amongst the other members of the Topaz family. London Blue prices start from 2.5$ per carat. The consumer markets of this dark blue stone are Europe, U.S.A. and Australia
Heat Treatments : Followed by irradiation treatments (either by gamma-rays, neutrons or electrons ) the treated topaz is heated to reveal the blue color more clearly by removing any yellow or brown color present on the stone. Heating acts as a cleaning for the gemstone. Heating should be applied on gemstones very slow and carefully. Because Topaz is heat sensitive and excessive heat can break, chips or shatter the gemstone. The heating should be done below the temperature of 200 degree Celsius
London Blue Topaz is by far the most searched Semi-precious gemstone on the Google. What’s the reason? The reason is the beautiful sparkle of London Blue Topaz and the non-replaceable gem that does not have any replacements, except for Blue Sapphire. And well, we know how much Blue Sapphires can cost
London Blue Topaz is the darkest shade of all Blue Topaz possible. Blue Topaz comes naturally in the form of White Topaz, and its further enhanced to make London Blue Topaz. All London Blue Topaz are heated in the market, naturally only Sky Blue Topaz and Light Swiss Blue Topaz can occur, which is extremely rare and expensive too
Why London blue topaz suits the best when we compare it with other blue color stones?
Blue gemstones with good hardness and transparency are comparatively high priced. Darker blue gems (Sapphire, Iolite, Tanzanite, Paraiba Tourmaline) are very expensive in good color and quality on the same hand other low priced blue gems like lapis, fluorite and others are cheaper but come with low transparency or no transparency and soft also that’s why less recommend in daily mainstream jewelry. Now comes LONDON BLUE TOPAZ, which is medium price range stone which good hardness, color and transparency
TPP Corporations activities in field of Topaz
There are usually four methods for changing the color of the topaz stone
Irradiation
The purpose of this method is to produce dark blue topaz rocks, because the nature of this mineral comes in pale blue. This color change is the same as the above method does not change its durability and color, it is usually indistinguishable.
Heat Treatment
The purpose of this work is to create pink (in the rare nature) of rocks that are yellow, orange or brown. This color change is durable and its color does not change. It's impossible to detect it.
Diffiusion
The purpose of this method is to produce different colors like red, green, and blue. It is not durable because the paint is detectable on the surface of the stone.
Surface Coationg
The purpose of this method is to produce rainbow colors for fire topaz (fire topaz). This method is not durable and is recognizable by scratch on the surface of the stone.
London's Topaz production is a complex process, so that only a few countries in the world have the ability and technical knowledge to produce this type of topaz.
TPP Company with 20 years of experience in radiation application in the radiation industry and safety
With the presence of prominent scientists and experienced technicians in the field of gemstone color shifting, it has been active in radiation, and is now not only able to produce London topaz, but has also been able to increase the color of some other gems, such as braille, diamonds, tourmaline Change
Our services in this area are done in two ways
irradiation service
We change the color of your topaz to London Blue Topaz
reliable sales
In this way we sell our own stones that are the best topaz rocks in Iran
