Bearing
The supporting ledge of a stone setting.
Bezel
A thin strip of metal that holds a gemstone in place. Used in place of prongs.
"Bearing the signature of" or "inscribed"
The piece has a signature which, in our opinion, might be spurious or that of a later follower of the artist.
Ceramics/Porcelains ...
Copper-bearing Gemstones that contain traces of copper are very rare and typically have a intense blue, blue-green or violet color. There was considerable excitement in the gem world when the first copper-bearing gemstones were discovered in 1989.
Copper-Bearing Beryl?
Imitation paraiba-type tourmaline from Russia ...
'Copper-Bearing' Cuprian Elbaite
The term "Cuprian" Elbaite refers to elbaite with copper (copper-bearing) as the principle chromophore. A chromophore is either an element or physical structure in a substance that produces color.
Bearings: the groove or shoulder in which a stone is fitted in a piece of jewelry.
Gold bearing limonite gossans were productively mined in the Shasta County, California mining district. Similar deposits were mined near Rio Tinto in Spain and Mount Morgan in Australia.
Iron-bearing Intermediate Members of Spessartite-Almandite Series
As the ratio of iron to manganese increases and the chemical composition grades from spessartite to almandite, the refractive index rises and brown tones appear.
Copper bearing mineral
Color: Blue to Green, Brown to Black
Often confused with turquoise
Hardness: 2 to 4
Transparency: Translucent to opaque
Can be found in Arizona, Utah, New Mexico and Pennsylvania, Israel, Zaire, and England ...
The PGM-bearing product that is shipped from the base metals refinery, as the Company's final product, to a third-party toll refinery for the final extractive stages in the refining process.
Footwall ...
The gem bearing earth is pushed into 50th sacks that are then carried on the backs of young men to the nearest stream for sifting. In some cases this could be miles.
Ore - Metal bearing mineral from which metal can be extracted.
Oriental Pearl - Natural pearl
Ormolu - Gilded bronze or brass mounts.
[Turquoise bearing rock, from Nevada: Image courtesy of Las Vegas Jewelry and Mineral, rare occurence of single turquoise crystals from Virginia 50x, malachite, turquoise and chrysocolla veins in an Arizona rock: Image courtesy of Dr.
I feel like I'm bearing the weight of the world.
Head
What a headache he is.
She has a swollen head.
I dove in headfirst.
Heated chromium-bearing pinkish-brown to orange stones
Normal
Irradiated to produce a green color
Diffusion of color at or near the surface ...
Ore: A metal bearing mineral from which metal can be profitably mined or extracted.
Oriental Pearl: A pearl that has formed naturally with no human intervention.
Precision jeweled bearing rollers use sapphire balls for their low-friction and long-wear applications. Some advantages of using synthetic sapphires as jeweled bearings are: ...
85% copper 15% tin bearing alloy.
Deep drawing
Forming deep, hollow components from sheet or strip by using a punch to push metal into a die.
paramagnetism Magnetic property in certain iron bearing minerals that cause them to be weakly attracted to magnetic fields. paramorph A pseudomorph involving two minerals with an identical composition but different crystal structures.
It is thought to form from fluorine-bearing gases released during later stages of solidification in acidic igneous rocks, and typically is found within rhyolites and granite cavities. Yellow is the most familiar color, red the most rare.
Native copper, the copper carbonates azurite and malachite, and the amorphous copper silicate chrysocolla are copper-bearing substances.
ID Bracelet: A modern type of bracelet design centering an arched plaque bearing the wearer's name; chains attached to either end of the plaque finish the bracelet.
Diamantiferous - Diamond-bearing ground. Return to Top »
Diamond - A mineral composed essentially of carbon that crystallizes in the "cubic," or "isometric," crystal system and is therefore singly refractive.
His surmise that the seam bearing the gemstones might possibly continue into Kenya finally put him on the right track. In 1971, he discovered the brilliant green gemstone for the second time, in Kenya.
It may contain small crystals of mica or other iron bearing mineral. This group includes aventurine quartz.
Cryptocrystalline Quartz
This is a group with microscopically small crystals of quartz embedded in opal, which is itself hydrated quartz.
Besides having the distinction of bearing the Koh-i-noor Diamond, centered in a Maltese Cross motif, it is the only British royal headpiece made of platinum.
Not all kimberlite and lamproite are diamond-bearing, and of those that do produce diamond, usually only a small fraction of the diamond is gem quality.
Goshenite is the transparent, colorless, alkali-bearing pure Beryl that was discovered in Goshen, Hampshire County, Massachusetts.
Diamond exploration in Canada began in the 1960s, but major discoveries of diamond-bearing kimberlite ore did not occur until the 1990s.
The shell of the pearl-bearing mollusc is also composed of these two substances. Calcium carbonate may crystallize in either of two forms, calcite or aragonite. In marble we have calcite.
Opal bearing boulder is always cut to include the host brown ironstone.
The deposit near Gore Mountain is an almandite-bearing diorite of uncertain, igneous or metamorphic origin. The garnet is present as imperfectly developed crystals surrounded by a rim of coarsely crystalline hornblende.
The largest pearl-bearing oyster types is the Pinctada maxima, which is roughly the size of a dinner plate. Not all oysters produce pearls. In fact, in a haul of three tonnes of oysters, only around three or four oysters produce perfect pearls.
Then use a bearing compass to site off a distant landmark. Upon returning to the location you hike up to the recorded altitude and traverse sideways maintaining constant altitude until you cross the site.
But the wheat sheaves brooch is quite ugly, and definitely does not look like a McClelland Barclay design, although it has a plaque on it bearing his full name. My favorite in this group is the double horse heads pin.
Tourmaline is the most common boron bearing silicate mineral and is almost exclusively found in geological formations known as pegmatites, where gem quality stones occur in open pockets in the pegmatite dikes.
On average, over 200 million ounces of diamond-bearing ore must be transported, crushed, sifted and sorted to glean just a single ounce of diamonds.
mechanical rocker box A rough diamond recovery method where diamond bearing gravel is first run across a series of screens to separate the larger and smaller chunks. The larger pieces are crushed until they measure approximately 1.5 inches across.
This precious Hortensia diamond is slightly orangish and pinkish in color bearing five cuts. In the year 1792, a number of jewels were being stolen from the Garde Meuble and Hortensia diamond was one of them.
The main gold-bearing areas are as follows: Leadhills, Tyndrum, the Ochil Hills and Strath of Kildonan.
There are other isolated occurences dotted over Scotland. I would advise beginners to start at either Leadhills ...
A watch bearing the inscription "water-resistant" on its case back can handle light moisture, such as a rainstorm or sink splashes, but should not be worn swimming or diving.
The mine bearing gemstone-quality red-beryl was found in the 1950's. The biggest red beryl crystal ever found was 14mm by 34mm, weighing about 54 carats. The average faceted red beryl gemstone weighs about 0.15 carats.
Most common copper-bearing mineral, found in many hydrothermal sulfide deposits. Often associated with galena, sphalerite, pyrite and other sulfides.
Industrial / ecomonic uses:
Mined for its copper which has innumerable industrial uses.
Melanite is a black titanium bearing variety of andradite and demantoid is a rich green variety.
Malaya is a trade name for a pyrope-spessartite that varies in color from red, through shades of orange and brownish orange to peach and pink.
Overview: Epidote usually occurs in high-pressure, low-temperature calcium-bearing metamorphic rocks and as precipitates from magmatic fluids in igneous formations.
The size of the pearl will also have a bearing on price. In general the size is measured using the diameter of the pearl and expressed in millimetres. Even a millimetre difference can create a 100 percent or more difference in value.
Strike
the direction, or course or bearing, of a vein of rock formation measured on a level surface
Stripping ratio
the ratio of the amount of waste material which must be removed in an open pit to allow one ton of ore to be mined ...
Jewels Instead of using a metal ball bearing in the works of a watch, a semi precious jewel (usually a ruby) is used instead. This insures that the ball bearing can not rust.
Jewels
Synthetic sapphires or rubies that act as bearings for gears in a mechanical watch. The jewels reduce friction to make the watch more accurate and longer-lasting.
Contact us toll free at: 1-866-GEM-5656 (1-866-436-5656) ...
Three-stone diamond ring: A ring bearing three diamonds of the same shape representing the past, present and future of a relationship. The center stone is usually slightly larger than the other two.
Paraiba tourmalines, particularly those from Paraiba, Brazil
Copper bearing gems from Mozambique and Nigeria: recent production has lagged at these sources
Strong color tourmalines from limited, high quality pockets ...
BLUE GROUND. Diamond-bearing clay of lower levels of South African diamond mines.
BLUE WHITE. Highest grade of South African diamonds.
Named from the Greek for "dawn-bearing," in allusion to the pink color.
Photos
& Locals:
1.) Minas Gerais, Brazil
2.) Minas Gerais, Brazil ...
The gemstone Chrysocolla is often confused with turquoise. It is a copper bearing mineral found wherever copper deposits occur especially in areas of the southwestern USA, Chili, Zaire, Australia, France and England.
Murfreesboro: Arkansas town in Pike County near the largest diamond bearing kimberlite pipe in the united States. The Crater of Diamonds State Park is 2 1/2 miles south of Murfreesboro where visitors (for a small fee) can search for diamonds.
Decal - a design-bearing sheet applied to ware for transfer of decoration; firing makes decal permanent.
arbor - A part of a mechanism that rotates or that turns in pivot bearings while holding something that turns. An example would be the mini mandrels when in a flexshaft handpiece.
Hard, iridescent substance that forms on the inside layer of a pearl-bearing mollusk.
nacre
A shiny, iridescent substance made from the lining of mollusk shells or fish scales.
Mother of Pearl The name is given to the lustrous pearly lining of the shells of pearl bearing molluscs. When polished it is similar to pearl.
Obsidian is a volcanic glass, which is generally black ...
Yellow/Orange topaz is occasionally irradiated to intensify color. Pink/Red topaz is usually heat treated chromium bearing pinkish-brown to orange stones. Brown topaz is not enhanced.
 See also: Stone, Color, Mineral, Crystal, Gemstone
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