Irradiated diamonds
Although diamonds are held In the highest esteem, especially because of their colorlessness, it is the eccentric caprices of nature which in rare cases, also give a diamond imaginative colors, for example, ...
Irradiated Topaz: Something old, something new, something borrowed, something blue ...
IRRADIATED DIAMONDS
Irradiated diamonds are diamonds that have been exposed to radiation. This changes the diamond's color (as the radiation changes the crystalline structure of the diamond). The change in the diamond is permanent.
Irradiated & Heat-Treated 'Blue Topaz'
Blue topaz is very rare in nature, and typically it has had a combination of gamma-ray irradiation via an electron-beam linear accelerator, ...
Irradiated Diamond: A diamond which has been exposed to radiation.
Knot: An included diamond crystal which reaches the surface of a polished diamond.
Irradiated diamond: A diamond that has been subjected to bombardment by electrons, neutrons or other atomic particles. Its purpose is to make the diamond's color more attractive and desirable.
J Top
Jager: Term for a fine white diamond.
irradiated
A diamond that has been exposed to radiation in a cyclotron to change its colour to a pale green or aquamarine
mélée
A diamond that weighs less than 0.2 carats or 20 points ...
irradiated diamonds Artificially treated to enhance or change the color of a diamond by way of bombardment. These treatments are commonly used on diamonds that have an undesirable tint, to improve their value and salability.
The irradiated colors are stable, and the gems are perfectly safe to wear, but the dual heat/irradiation processing does leave them somewhat more brittle than unirradiated stones.
Irradiated Diamond
A diamond which has been exposed to radiation.
Master Stones / Master Set ...
irradiated - Subjecting something to radiation. This is sometimes done to gemstone and pearl beads in order to change their color or clarity.
IRRADIATED A gemstone treated with radiation for the purpose of changing the color of the gemstone. The change affects a Diamond crystal structure and is permanent.
JET A black gemstone which is fossilized Coral.
Irradiated blue from pale pink or colorless
Heated to remove yellow component thereby producing a pure pink color
None
The penetration of colorless oil and resins into fissures to improve appearance
Produced by irradiation ...
R - Irradiated to intensify or change color.
A good example of this treatment is London Blue,
Swiss Blue and other deep shades of Blue Topaz.
These are extremely rare natural colors for topaz.
Virtually all deep blue color topaz is naturally a very ...
1914, Irradiated diamonds by immersion in radium bromide, (Pough & Schulke as reported in G&G spring 1951)
1938, Cyclotron irradiated diamonds (Hardy G&G summer 1949)
Pearl
Darkening ...
Usually irradiated and heated to produce blue color
Blue Topaz
Normal care but avoid excessive heat.
Commonly irradiated to intensify pink, red or purple color
Learning Center
Gemstone Learning Center ...
If neutron irradiated, refer to the NRC for safety requirements
Chrysocolla
2-4 (or more, if mixed with quartz) ...
[R] Neutron irradiated and/or heat treated.
Quantity Available: 4
London Blue Topaz$ 104.99
Item #TPZ471
2.38 ct. total ...
Colorless topaz is irradiated in large quantities and then heat treated to produce various shades of blue. Yellowish diamonds are often irradiated to produce a wide variety of colors.
Because naturally blue topaz is very rare, light colored topaz is often irradiated and heat treated to produce the coveted blue color. Topaz rates an 8 on the Mohs Hardness Scale and is December's birthstone.
Diamonds may also be irradiated and/or heated to induce "fancy" colors.
Even though it is the most durable of gemstones, care should be taken to protect a diamond from sharp blows.
Household chemicals may discolor or damage the mounting.
Flaws and cloudiness (called jardin) are very common in emeralds, so many emeralds are oiled, irradiated, and dyed to improve their look.
Topaz (Astrological Sign of Sagittarius) BLUE TOPAZ - Mohs Hardness: 8 - Treatment: Irradiated and heat-treated - Color: Intense dark blue; color saturation increases in larger sizes.
At times irradiated Quartz crystals will show both the smoky and amethyst color. A careful heating to remove the smoky color without starting the loss of the purple amethyst color will improve the appearance of such a crystal.
Its original color can be restored or even intensified by irradiation (for this reason, the stone is commonly heat treated and/or irradiated). Kunzite is relatively hard, with the same hardness as quartz.
A great deal of yellow, golden and orange sapphire is irradiated. This treatment is used on pale yellow sapphire to turn it golden yellow. Some light blue sapphire also turns orange after irradiation.
Blue topaz is artificially created after being irradiated. Though it is assumed that all blue topaz is treated topaz, blue topaz has been found to occur naturally in Texas, and in the Ural Mountains in Russia.
Many stones (like kunzite) are irradiated in order to enhance their color. Being irradiated changes the crystal structure of the mineral by moving electrons.
Our sapphires are not synthetic, heated to extreme temperatures, diffused, irradiated,
glass filled or oiled. Our natural untreated sapphires offer true beauty, rarity and superior value compared to treated sapphires.
Khanna "Infrared and Mass Spectral Studies of Proton Irradiated H2O+CO2 Ice: Evidence for Carbonic Acid", Spectrochimica Acta, 47A, pp. 255-262 (1991)
T. Loerting, C. Tautermann, R.T. Kroemer, I. Kohl, E. Mayer, A. Hallbrucker, K. R.
TREATED DIAMOND - A diamond that has been irradiated, neutron-treated, cyclontroned, electroned, exposed to radiation (radium bromide), or given any other modern treatment.
Drilled irradiated blacks can be detected by examining the drill hole to see if the nacre is black or white. Dyed and irradiated blacks can be detected by u.v.
Color: Sometimes colorless beryls are irradiated to produce yellow colours. This colour is considered stable. Maxixe beryl is almost always irradiated is often irradiated in a laboratory. Color is not stable.
Research has disclosed that green or irradiated diamonds are more common from alluvial deposits, although they are found in primary sources, usually in the upper part of the diamond-bearing volcanic pipe, but green diamonds of any size are rare.
After the raw topaz is extracted from the earth and cut, it is irradiated to brown and then heated to sky blue. This enhancement process is permanent.
Blue topaz: usually irradiated and heated to produce blue color.
Tourmaline: commonly irradiated to intensify pink, red and purple color.
Jade: commonly impregnated with colorless wax.
Blue diamond is an example of an irradiated gemstone. Irradiation is a gemstone enhancement process that uses high energy, sometimes followed by heating, to alter gemstone color.
Another market for the crystals is as feed material to be irradiated to produce smoky quartz. Most smoky quartz from Arkansas is not natural, but is irradiated rock crystal. Although its not the only U.S.
It is then irradiated (to incite the color change) and heated (to stabilize the change). The result is a permanent aqua shade.
Some varieties can be irradiated to various shades of blue, and this acceptable in the trade. Most blue topaz on the market today is irradiated. There is a grayish variety of topaz that is sometimes cut to produce a stone called "champaign" topaz.
I emphasize this because you may have seen blue topaz, especially in jewelry, which is a bright blue. These stones are artificially irradiated, and crystal healers generally prefer not to work with them.
White or light blue topaz is commonly irradiated and heat treated to become blue. These stones are stable in natural light but not under the jeweler’s torch, where its color reverses to white.
Freshwater pearls that have been irradiated to produce a multi-color finish in shades of mauve, blue, turquoise and purple. This finish is deemed, by most experts, to be permanent.
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Swarovski® ...
Most blue topaz is silver topaz that has been irradiated and heat treated, but some stones are blue naturally. London blue topaz is found in Brazil, U.S.A.
Irradiation: The process of exposing diamonds or gemstones to a radioactive substance that alters the colour. Blue topaz is routinely irradiated to enhance the colour, and some fancy colour diamonds are irradiated, especially those from the 1960s.
Luminescence emanating from substances that have been irradiated with ultraviolet light or X-rays, but persisting after the source of stimulation has stopped.
Piezoelectric...A substance that becomes electrically charged by pressure.
To find an entire string of cultured pearls in the same shade, you may have to consider dyed or irradiated pearls. The particular shade should be chosen based on preference and what best complements your skin tone.
Treated stone A stone that has been heated, dyed, irradiated, or stained in order to improve the color or the clarity. Also pertains to gems that have their cracks or fractures concealed by filling the material.
Available in colors, both natural and irradiated (color added, or induced)
Nearly all sizes available
prices vary, availability fluctuates ...
These days, most emeralds are oiled to improve their clarity, irradiated to improve their appearance, or dyed to improve their colour.
Diamonds are sometimes irradiated to produce or enhance various colors. Other gemstones may also be treated using this method.
These colors can be natural, but to find an entire string of cultured pearls in the same shade, you may have to consider dyed or irradiated pearls. The particular shade should be chosen based on preference and what best complements your skin tone.
Blue Topaz - A topaz ranging in color from pale blue to bright blue. Most blue topaz is irradiated & heat treated to produce their blue color. Blue Topaz is one of the birthstones for December.
Most blue topaz starts life as a colorless or slightly tinted topaz from places like Brazil, Mexico, Nigeria, Sri Lanka and China. It is then irradiated (to incite the color change) and heated (to stabilize the change).
Smoky Quartz - Smoky Quartz is a brown transparent quartz in color and is sometimes called smoky topaz. Smoky quartz is formed when rock crystal is irradiated.
Dark blue, blue-green and green tourmalines are occasionally heated to lighten their color. Red tourmalines, also known as rubellites, and pink varieties are often heated or irradiated to improve their colors.
The blue Topaz with which we are familiar today actually started out as white Topaz. Once irradiated and heat treated, the stone changes in colour to a range of blues that often makes it hard to distinguish from Aquamarine.
Mot topaz mined is completely colorless and transparent. A very slight pale grey blue color is also found in abundance in nature; however, most blue and dark blue topaz sold today is actually irradiated white topaz.
irradiation process of the diamond was accomplished between the years 1955 to 1971. The Deepdene had been subject to irradiation process probably by neutron bombardment. Thus, the Deepdene is extensively considered to be the major irradiated ...
 See also: Color, Gemstone, Diamond, Stone, Crystal
  
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