The gemstone properties listed below are for rounded, maximum quality gemstones. Non-rounded gem stones may have dissimilar effects.
refers to the action of diamonds with acids (usually hot) to clean up after cutting or after mining, mainly to remove oxides or shining residues from surface cracks. .
A jour :
is a kind of diamond increase that exposes the tent to the light and is used in the majority of modern mounts, unlike previous closed locations.
refers to a diamond cut in the form of a fine bar, sometimes pointed at one end. It was named after the lengthy French bread loiter.
is an additional name for a baguette.
is the hard rock found in places of grates, deposits, soil, sand and so on.
happen when the cross-cutter creates the four top curve facets into eight.
refers to a thick strap.
is locating on the 16 main surfaces by the cross-cutter.
is the miner's given name for the unoxidised kimberlite in a cylinder or new kimberlitic deposit.
is a puzzling word often mistakenly applied. A blue-white sandstone should have a pale hint of blue, still though the report is generally proposed to mean colourless. Occasionally it is applied to stones with a faded tinge of yellow.
is an extremely low-grade diamond appropriate only for industrialized use. It is also spelt bort, boort and bortz.
is an experienced person liable for the last stages of placing on and polishing the 40 sides after the cross-cutter's effort. It is also predicted brilliandeer.
is the strength of the white light as a diamond is appeared at in the face-up location.
is a new name for cutting to fashion the belt sketch of a brilliant cut.
refers to stones that have been cut to average dimensions for trouble-free setting into normal mounts.
is the standardised part of burden for gemstones. One carat is equivalent to 0.20 of a gram.
is used to express a diamond that has no eagerly visible insertions, grade SI and above.
refers to the resemblance of a shape to separate along the grain parallel to one of its octahedral features. Moreover it is a term useful to irregular diamonds that have at some time been sliced from a larger stone.
is the skillful person who chops a diamond into two parts.
is the quick point at the base of the pavilion of a brilliant cut, or carving knife edge on an emerald-cut sandstone.
is the trained person who crushes and polishes the first 16 facets on a diamond.
is the superior component of a polished stone above the strap.
is the Central Selling Organisation which distributes regarding 80 per cent of the world's irregular gem quality diamonds.
refers to awfully small facet on the base of the pavilion, matching to the table. It is also predicted to collet and culette.
is the shape into which an uneven diamond is cut and polished.
Cutter or bruter:
makes the rough diamond in a circle before it is faceted.
is a new name for the parcel paper.
Diamond parcel paper:
is the specifically crinkled paper in which a diamond is or diamonds are detained for moving, or transporting.
explains the method a diamond smashes up a beam of white light into colour.
refers to the container used for a diamond that is being refined. A diamond is held in a join dop by link and in an automatic dop by metal jaws.
describes the procedure of eliminating diamonds from ponder.
is an additional small surface normally useful to eradicate a small mark most frequently on or subsequent to the girdle.
refers to a belt on which small sides have been polished to recover the brilliance of the diamond.
is the location of a diamond with the table of the rock facing the spectator.
are pleasantly coloured diamonds.
is a diamond of a good-looking colour other than white that is appropriate for gem use.
refers to the broken colours seen when a properly cut diamond is enthused, resulting from its diffusion.
is a slight paper used to line up the inside of a diamond package paper.
is the proper name for a brilliant-cut diamond with 56 features plus table and culet.
is a class of rim at the widest division of a diamond by which it is usually set. It is the consequential circumference of the adjacent cap and pavilion angles at the widest element of the stone.
explains the method a rough diamond is curved. It is also a new name for cutting and bruting.
is the experienced person who divides polished diamonds into dimensions and quality marks by simplicity, colour and precision of cut.
is a name used by shears and polishers to portray the noticeable evidence of the gemstone structure of a diamond, and will regularly determine their process.
is an unmounted, elegant diamond.
refers to the worth of a shell in reflected light. The lustre of a rhombus is typically explained as admantine lustre.
are rough stones and forms under two carats and used freely for small polished diamonds.
is the integration of two dissimilar cuts for one diamond, such as a dazzling cut crown and step-cut porch.
Mount or mounting:
is the division of jewellery into which a mineral is set.
is branch of the natural shell of a rough diamond missing on the girdle by the cutter determined for greatest weight maintenance.
is one more name for a marquise.
is a value of rough diamonds involving gem and industrial.
word illustrates the method of adding up the eight main surfaces to the top and bottom of a stone, which creates its table octagon-shaped.
is better than normal culet.
is superior than normal facet.
Open cast or open pit:
describes mining from the shell.
Opening a diamond:
means clean a window on a rough stone to see within it.
is the base part of a cultured diamond below the girdle.
refers to a roughly funnel-shaped, usually extrusion of volcanic rock that may or may not contain diamonds.
is the hundredth of a carat, therefore 0.72 carats equal 72 points.
refers to a girdle that has been polished but not faceted.
measures the degree of excellence of a diamond by its weight, colour, clarity and (polished) its perfection of cut.
is the name specified to diamonds earlier than they are cut.
is the expert person who see diamonds.
are the rough diamonds that can be separated by sawing.
is also implied scaive or scaif, and refers to the horizontal phonograph or grinding table on which a rhombus is refined.
refers to the blinking and flashing sparkle of a diamond when it motivated under light. A diamond is constantly more beautiful in action because its scintillation depends upon the quantity of facets observable to the eye when the diamond shifts.
is a diamond or added stone set in a mount.
is the ordinary surface of the unsophisticated diamond.
is the skilled person who divides rough diamonds into volumes and grades of quality by shape, clarity, and colour.
are the eight triangular facets about the table of a diamond that creates its star-shaped.
is the huge facet on the top of the diamond's cap.
explains a polished diamond that has been distorted to change its form, eg by false colouration, that is, irradiation.
is the surface polished on a rough diamond in organize to see surrounded by it.