Diamantordlista
Nyckeltermer och definitioner från diamanternas värld
Annealing
Heat treatment applied after irradiation to stabilise or further modify a diamond’s colour.
Läs merAsscher Cut
A square step cut with cropped corners, known for its distinctive hall-of-mirrors optical effect.
Läs merBaguette
En rektangulär trappslipning, ofta använd som accentsten.
Lunettfattning (bezel)
En fattning där en metallkant omger hela stenens omkrets.
Cape Diamond
A diamond with a yellowish tint caused by nitrogen impurities (N3 centre at 415.5 nm).
Läs merKatedralfattning
En hög fattning med bågformade axlar som påminner om en katedral.
Clarity Characteristics
Internal and external features (inclusions and blemishes) used to determine a diamond’s clarity grade.
Läs merCoating
A surface treatment that applies a thin layer to alter a diamond’s apparent colour; not permanent.
Läs merKrona
Den övre delen av diamanten ovanför rondisten — innehåller tafeln och kronans facetter.
Läs merCrown Angle
The angle between the bezel (crown main) facets and the girdle plane, influencing the balance of fire and brilliance.
Läs merDepth Percentage
The total height of a diamond divided by its average girdle diameter, expressed as a percentage.
Läs merDiamond Grading Report
A document issued by a gemological laboratory detailing a diamond’s 4Cs, measurements, and identifying characteristics.
Läs merFancy Vivid
The highest colour saturation grade for fancy coloured diamonds, indicating the most intense and pure colour.
Läs merFluorescence Grades
The five-point scale used to describe fluorescence intensity: None, Faint, Medium, Strong, and Very Strong.
Läs merFracture Filling
A clarity treatment in which a glass-like substance is injected into surface-reaching fractures to reduce their visibility.
Läs merFTIR
Fourier-transform infrared spectroscopy, used to classify diamond type (I/II) and detect certain treatments.
Läs merHPHT
High Pressure High Temperature — en metod för behandling och tillverkning av diamanter.
Läs merHue
The dominant spectral colour of a fancy coloured diamond, such as blue, pink, or yellow.
Läs merIrradiation
A treatment using electron or neutron bombardment to alter a diamond’s colour, often followed by annealing.
Läs merKarat (guld)
Mått på guldrenhet (24 kt = rent guld). Förväxla ej med diamantkarat.
Kimberleyprocessen
Internationellt certifieringssystem som förhindrar handel med konfliktdiamanter.
Läs merLaser Drilling
A clarity treatment that uses a focused laser beam to create a channel to reach and bleach dark inclusions.
Läs merLaser Inscription
A micro-engraving on the girdle of a diamond, typically the laboratory report number, used for identification.
Läs merMeasurements (mm)
The length, width, and depth of a diamond recorded in millimetres on a grading report.
Läs merMelee
Små diamanter (under 0,2 ct), ofta använda som accentstenar.
Milky Diamond
A diamond with reduced transparency caused by sub-microscopic inclusions or structural irregularities.
Läs merOverweight Diamond
A diamond cut deeper than ideal proportions to retain carat weight, resulting in a smaller face-up appearance.
Läs merPaviljong
Den undre delen av diamanten under rondisten — reflekterar ljus tillbaka genom kronan.
Läs merPavilion Angle
The angle between the pavilion main facets and the girdle plane, critical for light return and brilliance.
Läs merPhotoluminescence (PL)
A spectroscopic technique using laser excitation to identify defect centres and detect treatments in diamonds.
Läs merPlot
A diagram on a grading report that maps the location and type of a diamond’s clarity characteristics.
Läs merPolish
The quality of a diamond’s surface smoothness resulting from the cutting and polishing process.
Läs merProportions Diagram
A profile view on a grading report showing key angles, percentages, and measurements of a diamond’s cut.
Läs merSpread
The face-up size of a diamond relative to its carat weight; a well-spread stone looks larger for its weight.
Läs merStrain Patterns
Internal stress features visible under cross-polarised light; their character differs between natural and lab-grown diamonds.
Läs merTable Percentage
The width of the table facet divided by the average girdle diameter, expressed as a percentage.
Läs merSpänningsfattning
En sten hållen av metallarmarnas tryck — verkar sväva.
Tone
The lightness or darkness of a fancy coloured diamond’s colour, ranging from very light to very dark.
Läs merType I / Type II
Scientific classification of diamonds based on nitrogen content and arrangement; Type I contains nitrogen, Type II is virtually nitrogen-free.
Läs merUV-Vis-NIR
Ultraviolet-visible-near infrared spectroscopy, used to analyse colour origin and detect treatments in diamonds.
Läs merVVS klarhet
Very Very Slightly Included — minimala inklusioner, svåra att se under 10× lupp.
Läs merFönstereffekt
Ett mörkt område i mitten av en dåligt slipad sten där ljuset „läcker igenom".
Läs mer