Internal Grain Center (IntGr) inclusions (aka internal graining) are caused by irregular diamond crystal growth which creates internal distortions, waviness, and haze within a cut diamond.
Internal Trigons Grain Center Inclusions ...
GRAIN:
Unit of weight for measuring diamonds and pearls. One grain is equal to 0.25 carat.
See also: Inclusion Facet
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Grain Lines
Grain Lines are like rings in a tree. Graining is irregular growth patterns that show up in the Diamond. Often they will look like ripples or waves in the stone.
Cloud ...
Grain lines: These inclusion crops up in the diamond at the initial stage of formation. The reason is same as other inclusion that is improper crystallization.
GRAIN - One of the earliest units of weight for gold, one grain being the equivalent of one grain of wheat taken from the middle of the ear.
Grain
Grain is used to measure diamonds and pearls. Four grains are equivalent to one carat.
Gram Weight
Gram Weight is a measurement in grams, used in jewelry to weigh metal.
Graining
Visible, shadow-like lines on the surface of, or inside, a diamond, caused by irregularities in the crystal structure.
GRAIN
A grain is a unit of weight used for diamonds and natural pearls. Four grains are equal to one carat.
GRANULATION ...
Grain
A small spherical bead of metal
Granulation
The process of decorating a metal surface with tiny grains of metal ...
GRAIN MARKS. Lines on the facet surfaces, the result of imperfect polishing.
Grain Center: A small area of concentrated crystal structure distortion, usually associated with pinpoints.
Grain: The cleavage direction.
Grain mark: Line on the facet surface due to imperfect polishing.
grain There are twelve separate grains in diamond even when not visible. These grains must always be considered by the cutter when choosing a cutting position in relationship to the wheel (scaife).
grain
A unit of weight used for diamonds and natural pearls. One grain is equal to 0.25 carats or 25 points
irradiated
A diamond that has been exposed to radiation in a cyclotron to change its colour to a pale green or aquamarine ...
Grain
The standard unit of weight once used for natural pearls. Four grains are equal to one carat.
Granulated Finish ...
Milgrain (also spelled millgrain) - The raised beaded edge of piece of jewelry created with a knurling tool. The effect resembles antique embroidery.
Mounting - : The metal frame or housing in which gemstones are set.
Milgrain: A raised, beaded edge on a ring done with a special engraver's tool; resembling the edge of a coin.
Milgrain Setting: A milgrain design engraved into the edge of the metal securing a stone in place.
Milgrain: The metal is formed with a texture resembling a string of tiny beads which outlines a design detail or border.
Milgrain - A raised, beaded edge on a ring done with a special engraver's tool.
Millefiori - Means "thousand flowers" in Italian. A method of creating glass or clay beads with intricate patterns using canes.
Millgrain edge - Beaded or ridged, like the edge of a coin
Mineral crystal - see quartz
Mohs scale - A scale of mineral hardness devised by Frederich Mohs in 1812, ranging from talc (1) to diamonds (10).
millgrain edge
A look which is knurled, or has the look of small beads or ridges, such as the edge of a coin.
morganite ...
Millgrain Edge: An edge that has small beads or ridges, giving the effect seen on the edge of a coin.
Millegrain Edge: A design consisting of very small, repeated ridges.
Millegrain
A style of setting in which the stone is held in place by a row of tiny beads along the girdle of the stone.
Mineral
Inorganic substances occurring naturally and having a definite chemical composition and crystal structure.
Mill Grain Edge - Created with a special engraving tool, a millgrain edge is a raised design along the edge of the jewelry.
Pearl Grain: The pearl grain, is .25 grams, so one gram is equal to 4 pearl grains. Thankfully, the only remaining use of this once important measure, is sometimes seen in the sale of natural pearls by weight.
Surface Graining: structural irregularities in crystal growth; may appear as faint lines, causing grooved or wavy surfaces and often cross facet junctions.
Grain boundaries are generally only a few nanometers wide. In common materials, crystallites are large enough that grain boundaries account for a small fraction of the material. However, very small grain sizes are achievable.
Grain
The unit of weight once used for natural pearls. Corresponds to 0.05 grams. 1 gram = 20 grains. Carat weight is now generally used.
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GRAIN
A grain is a tiny sphere of metal.
GRANULATION
Granulation is a method of decorating metal with tiny metallic spheres. Tiny beads of metal are soldered to the surface to form a pattern.
Grain...(Troy system)..480 grains to the oz.
Habit...Characteristic crystal form.
Hacklt...A fracture characteristic of metals in rock, like gold and copper. (hackly) ...
Grain lines
Crystal inclusions formed due to improper crystallization of diamond.
Heart shape cut ...
Grain
Diamond crystal have different strength bonds in different directions. These directions are known as grain rather like the grain in wood. Also an obsolescent unit of weight, equal to a quarter carat or 0.042 pennyweight, 0.002083 troy ounce, 0.
1 grain = 0.0648 grams or 0.002083 troy ounces.
15.43 grains = 1 gram
480.6 grains = 1 troy ounce ...
Milgrain Wedding Band in 14k White Gold $315
Low Dome 5mm Wedding Band in 14k White Gold $535
Traditional Two Tone Wedding Band in 14k White & Yellow Gold $570 ...
Milgrain - A band of metal that is decorated with tiny beads of metal.
Bracelet Types:
Bangle - A bracelet that generally slides over the wrist without expanding or opening. Bangle styles include cuff, expansion and hinged.
24 grains = 1 pennyweight = 1.5552 grams
20 pennyweight = 1 troy ounce = 31.1035 grams
12 ounces = 1 pound troy = 373.24 grams.
Turquoise ...
Four Grainer
Point
Clarity
A stone's relative position on a flawless to imperfect scale. Clarity characteristics are classified as inclusions (internal) or blemishes (external).
Fine grained silicate rock produced by metamorphism.
MC -
Miarolitic cavities.
Millegrain
A decorating style creating a fine bead like effect around the edge of a metal collet; popular in the Edwardian and Belle Époque periods
Minaudière ...
A millegrain (or millegrain setting) is a setting in which the stone is secured by tiny beads [grains] of metal or a band of metal that is decorated with tiny beads of metal.
MILLING ...
Growth/Grain lines: An imperfection within the diamond. They are created by an irregular crystallization when the diamond is formed and can be colorless, white or colored.
Coarse-grained igneous rock composed of the minerals plagioclase feldspar and orthopyroxene.
Ore
That part of a mineral deposit which could be economically and legally extracted or produced at the time of reserve determination.
Milgrain
A decorative technique in which a beaded design is impressed into the metal.
2 Tone Milgrain Wedding Band (5 mm)
Platinum Hammered Wedding Band with Diamond (5.5 mm) ...
The finely grained, gray-brown jasper from Nunkirchen is colored with Prussian blue and sold as an imitation under the name of "Swiss lapis.
"The small grains of platinum were mixed with a little gold dust and small portions placed upon a piece of wood-charcoal. When the gold runs it will coat the grains of platinum with gold. The grains are simply 'soldered' together.
Internal Graining: Internal indications of irregular crystal growth. May appear milky, like faint lines or streaks, or may be colored or reflective.
L
Loupe: A magnifying glass usually of 10X used to examine diamonds.
Internal Graining
A gemstone which contains internal irregular crystal growth is known as internal graining. It may appear milky like faint lines or streaks.
Iridescent ...
Growth or Grain Lines: These can be considered internal flaws, and can often be seen only by rotating the diamond very slowly. They can appear and disappear almost instantaneously. They appear as small lines or planes within diamond.
Forms in coarse grained igneous rocks. Chiefly in nepheline - syenites
Association:
microcline, aegirine, nepheline ...
Some state "Surface graining is not shown" under the COMMENTS section. What does this refer to ...? Are these other imperfections that buyers should be aware of ...? Or are they normal?
-- Chris B., Texas ...
Millegrain: A style of decoration consisting of a series of minute adjacent metal beads that are raised by passing a rolling tool across the surface of the metal. This style was developed in the 19th century.
Mille Grain Using a chisel to produce continuous fine granular relief patterns on the edge of the base metal. Open work Creating a pattern by inserting openings with a jeweler's saw.
1 pennyweight 24 grains = 1.5552 grams
1 Troy ounce = 20 pennyweight 31.1035 grams
1 Troy pound = 12 Troy ounces 373.24 grams
TSAVORITE ...
Inclusions Mineral grains that once existed separately but now form an aggregate
Kamacite Nickel-iron alloy (7wt %) phase with body-centered cubic structure
Limonite Oxidized iron; rust ...
one carat = four grains.
A one-carater therefore is also a four-grainer. The term "one-carater" does not only refer to a diamond of exactly 1.00 ct, but comprises diamonds within a certain weight zone, which can be described as follows: ...
5. Brush along the grain over the entire surface with a shoe-brush. Rub vigorously as if you were polishing your shoes to work the wax deep into the grain and to remove any excess.
RELATED TERMS: See Engraving and Milgrain Bangle:A type of rigid bracelet that slides over the hand, generally without opening or expanding. Bangle styles include cuff, expansion and hinged.
Freshwater PearlA pearl produced by a mollusk that inhabits freshwater, usually these pearls are shaped like an uneven grain of rice.
 See also: Stone, Color, Crystal, Jewel, Gemstone
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