The act of cleaving or splitting.
The quality possessed by many crystallized substances of splitting readily in one or more definite directions, in which the cohesive attraction is a minimum, affording more or less smooth surfaces; the direction of the dividing plane; a fragment obtained by cleaving, as of a diamond. See Parting.
Division into laminæ, like slate, with the lamination not necessarily parallel to the plane of deposition; -- usually produced by pressure.
The tendency of a crystal to break along certain preferred planes in the crystal lattice; also, the geometric pattern of such a breakage.
The tendency of a rock to break along certain planes induced during deformation or metamorphism, usually in the direction of preferred orientation of the minerals in the rock.
In rocks, a tendency to split (cleave) along parallel and generally closely spaced surfaces caused by planar orientation of mineral constituents. True cleavage surfaces are unrelated to original stratification, but the term is also loosely used in some stone industries for splitting along the depositional layering.
(1) Physical splitting of a cell into two. (2) Specialized type of cell division seen in many early embryos whereby a large cell becomes subdivided into many smaller cells without growth.
The tendency of a crystalline mineral to break in certain definite directions called cleavage planes. The breakage is done by cleaving, a process where a stone is studied so that the plane may be defined and divided with a swift blow. This swift blow splits the stone into proportions quickly as opposed to sawing.
A mineral's tendency to break in a preferred plane in a crystal lattice.
It is the tendency of a crystalline mineral to break in a certain definite directions called cleavage planes. The breakage of such cleavage is done by cleaving. Cleaving is a process where a stone is studied in order to define the plane and divide it with a swift blow. The swift blow splits the stone into proportions quickly as opposed to sawing.
The breaking of a mineral along crystallographic planes, this reflecting crystal structure.
(cleav'-age) The tendency of a mineral to break along specific crystallographic planes in all specimens because the presence of directions of weakness in the crystal due to fewer or weaker chemical bonds in those directions.
the tendency in minerals to break in such a way that a smooth, more even surface results
the tendency to break along planes of weakness. It usually refers to flat, reflective surfaces in some minerals, but may also be applied to foliated meta-morphic rocks, like slate.
The tendency of a mineral to split along crystallographic planes.
The tendency of certain minerals to break along planes of weakness, producing flat surfaces.
A break in a diamond which is parallel to one of its crystallographic planes. A cleavage may be caused by inherent internal strain or by a sharp blow. The break may extend to the surface of a diamond.
A tiny flaw, in the form of a crack, inside a diamond. Very minor cleavages will not affect the brilliance of a stone. Major cleavages can damage the diamond's structural integrity.
The structure by which certain metamorphic rocks, such as slate, split most readily, often at an angle to the original bedding plane.
the state of being split or cleft
the breaking of a chemical bond in a molecule resulting in smaller molecules
a major tool used for studying conformational changes and strand breaks, as well as for studying activation of nucleic-acid-targeted drugs, such as antisense oligonucleotides
a serious flaw, as it can compromise the stability of a diamond
a weakness in a crystal that tends to break along a certain plane
The quality or property of a crystallized substance, mineral, or rock of splitting, parting, or separating along definite planes. Classic examples include the minerals calcite and gypsum.
The breaking of some minerale long one or moreregular directions.
The tendency of certain crystalline minerals like mica to split in definite directions. The split pieces have unusually smooth surfaces. Some gem minerals, including diamond, can be split rather easily along certain planes of weakness.
The way that certain rocks will break along certain smooth surfaces, or planes related to their atomic structure.
The breaking of stones along lines of weakness related to the stones internal atomic structure.
The plane of weakness of some gems where they will split apart with smooth surfaces. Gems with perfect cleavage are likely to break when being cut or faceted.
The breaking of a mineral along crystallographic planes, that reflects a crystal structure.
The natural way in which a mineral splits along definite planes based on its internal crystalline structure.
The tendency of certain minerals to break along distinct planes in their crystal structures where the bonds are weakest. Cleavage is tested by striking or hammering a mineral, and is classified by the number of surfaces it produces and the angles between adjacent surfaces.
The ability of a rock mass to break along natural surfaces and seams.
The tendency of a mineral to break along weak planes.
The ability of a rock mass to break along natural surfaces; a surface of natural parting.
The tendency of a crystallised mineral to break along certain definite directions producing more or less smooth surfaces. We prefer Karolina Kurkova's cleavage.
A plane of atomic weakness resulting from the atomic arrangement within a crystal. Labeled a feather when seen in a diamond.
A break in a diamond caused by a crystalline mineral to break in certain definite directions. May be caused by internal pressure or a sharp blow.
The tendency of a crystalline mineral to break in certain definite directions called cleavage planes. The breakage is done by cleaving, a process where a stone is studied so that the plane may be defined and broken with a swift blow. This swift blow splits the stone into proportions for fashioning more economically or for allowing better quality selection.
The ability to split as a smooth and flat surface is a property that some minerals have.
The propensity of crystalline minerals, such as diamond, to split in one or more directions either along or parallel to certain planes, when struck by a blow. Cleavage is one of the two methods used by diamond cutters to split rough diamond crystals in preparation for the cutting process (sawing is the other method).
an internal growth characteristic that runs in the direction of the grain of the diamond.
A grain property of a gemstone similar to the graining of a piece of wood. Stones can be easily split into along the cleavage line.
A natural area of the diamond where a weak bond holds the atoms together. The gem will be split along these planes by the cutter.
Splitting (fracture) of a crystal on a crystallographic plane of low index.
Breakpoint or weakness of a gem, connected to its atomic structure. Ironically, gems defined as having perfect cleavage are the ones most likely to break when being cut or faceted.
A term to describe a break within a diamond. Usually the cleavage crack extends to the surface. It is the most damaging kind of imperfection in a diamond, since it affects durability as well as beauty. Also a term sometimes used for a diamond crystal that requires cleavage (splitting) before being cut and polished.
In minerals, it is the direction that a crystal usually breaks to produce a flat surface. There may be one or several cleavage directions In rocks, the direction in which certain metamorphic rocks, particularly slate, split.
Among gemstones, cleavage refers to the act of splitting or the tendency to break parallel to certain flat planes. Cleavage is rarely entirely on one level but can have a step like appearance. A gem???s cleavage can be easy or difficult and can range from perfect to imperfect, depending on the cohesive properties of atoms in the gemstone and the strength of those bonds based on direction of growth. Some gemstones such as quartz have no cleavage.
The tendency of some minerals or rocks to break along planes of weakness. This weakness occurs because of the nature of the bonds between mineral grains.
Crystallographic planes along which minerals tend to break due to bond strengths in the atomic structure.
Cleavage is the way in which a stone has the tendency to break along its crystal structure.
A tendency in rocks to split along definite, parallel, or crystal planes characteristics of the mineral.
(a) The tendency of a crystalline mineral to break in certain definite directions, leaving a more or less smooth surface. (b) The act or process of producing such a break. (c) One of the portions of such a mineral resulting from such a break. (d) A term sometimes used for a diamond crystal that requires cleavage before being fashioned. (e) A misshapen diamond crystal, particularly one that is flat and rather elongated. The term is used by diamond cutters to refer to such a crystal, whether or not its form results from cleaving. (f) A grading term used at the mines for broken diamond crystals above one carat, of reasonable thickness, and not twinned. (g) A break within a diamond.
The ability of a mineral or rock to split along predetermined planes.
The distinct planes of weakness that a mineral breaks along.
Cleavage is the natural in which way a mineral breaks, along certain planes based on its internal crystalline structure.