mask A modifying color, usually brown or gray, that diminishes the saturation (brightness or vividness) of a gem's hue.
Mask of Agamemnon (c.1500 BC)
Gold in Ancient Egypt (c.1340 BC)
Virtually every ancient civilization from the Mycenae and Romans to the Incas, Aztecs and ancient Asiatic cultures have all used gold as jewelry, currency, ...
Gold mask with platinum highlights, La Tolita Culture, Ecuador
European Experiments ...
Behind the Mask of Spider-Man: The Secrets of the Movie
by Mark Cotta Vaz (Paperback - March 2002)
Spider-Man: Music From And Inspired By [SOUNDTRACK]
~ Various Artists (Audio CD) ...
Database rights
Mask work
Plant breeders' rights
Supplementary protection certificate
Traditional knowledge ...
Cold Weather Face Mask - Polar Band-it
Combination cold weather face mask and neck up for all outdoors cold weather occasions such as jogging, hiking, biking, camping. Warm up from the neck up.
Many stones are treated to mask the natural imperfections. Emeralds rate a solid 7.5 to 8 on the Mohs Scale, making them an excellent choice for jewelry.
Gray grading to black is the normal saturation modifier or mask found in chrome tourmaline. Due to its chemistry, chrome tourmaline is normally highly saturated. An overabundance of chromium/vanadium appears to be the culprit.
Some diamonds are painted with semi-permanent paint, mostly to mask off-tints or blemishes.
Moreover, this fluorescence, generally blue, tends to mask under sunlight the real color of the diamond (generally yellow or brown) and therefore falsify the color grade.
These types of Mountings will help mask color like no other mountings will. Take a look at the images below to compare White Gold Mountings with Yellow Gold Mountings.
See the difference? Yellow Gold Mountings help the Diamond Color blend in.
Oiling is a process of applying mineral oil to a stone in order to enhance it and mask inclusions, make them more transparent, and darken their color. Emeralds are frequently oiled to mask their many inclusions.
OLD MINE CUT ...
Oiling, a process of applying mineral oil to a stone, is used to mask inclusions or enhance the color of a gemstone. Emeralds, although very valuable are typically infused with inclusions. Emeralds are often oiled to improve quality.
: blue for sapphire is not descriptive enough; instead: Blue zone 80 with a 10% gray mask).
Cut
Plotting with key (all major stones)
Enhancements: Remember, over 90% of all colored gemstones on the market today are enhanced.
Certain magnetic products like the Magnetic Headband, Magnetic Eye Mask and Serenity Mattress Overlay are beneficial for you.
3: Medical Benefits of Different Types Of Magnetic Products ...
Coating applied to the pavilion girdle area can be used to mask a pale yellow color or give a blue or pink tint. Well applied coatings can be difficult to detect but sometimes give a grayish tint to the stone's color.
The color of the metal in a mounting can either mask or enhance the color of the diamond.
Blue to green opaque mineral. Burial mask of Tutankhamen is inlaid with turquoise. 5-6.
Z
Zoisite ...
Oiling: The process of applying mineral oil to a stone, such as an emerald, to mask inclusions and enhance the color.
The jeweler will often show the gem against a background that's meant to intensify its color and mask its flaws. If possible, try to view the gemstone against a white background for best judgment of its color quality.
Many rough diamonds are covered by a skin or coating which can mask their potential appearance.
Coating, Applied ...
By doing this you will get the bull's-eye effect when you dome the stone. Wear a mask while grinding as the flying dust is toxic and grind on a well worn out 600.
Coated diamond: Also - painted diamond. A diamond that has been coated with a substance that imparts a bluish color to mask a yellowish body color. Painting diamonds is a deceptive practice.
The reprehensible practice of oiling in which a jeweler or seller applies oil to a gemstone to mask inclusions and enhance color.
Opal ...
I don't know if familiarity always breeds contempt, but impatience and intolerance are two of the more common dangers in relationships, especially since minor irritations can cause battles which mask deeper issues.
Most stones on the market are impregnated with oils, waxes, or other substances to mask the fractures and sometimes enhance color. Such stones should never be cleaned with ultrasound, as it may remove or damage the impregnating substance.
Rubies that are so enhanced may often develop fractures, decrepitation feathers or rutile needles as a result of the stress of heat treatment, and must then be further treated to mask these flaws.
These additional colors will mask the true body color a diamond, even a 'D'. Generally if a diamond is noted as being 'negligible' or 'faint' fluorescence, the overall effect on the diamond will be minimal.
Artifacts using glass backed with blue paint, and blue ceramic materials in lieu of lapis, include the famed King Tut Death Mask.
Yellow gold also makes a good setting for slightly yellowish diamonds because it tends to mask the diamond's yellowish tints. Yellow gold comes in all shades of yellow and personal taste usually dictates which hue to choose.
Be sure not to do this indoors because of the toxic fumes the acid puts off. Do not use any type of metal or aluminum container for the acid will create a toxic gas cloud, please remember to use rubber glove and a mask at all times.
Each color represents a wavelength within the spectrum of visible light - red, orange, yellow, green, blue, and violet. Fire is best seen in colorless or lightly colored gems, since deeper, richer colors tend to mask the effect.
 See also: Stone, Color, Crystal, Rough, Make
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