A phenomenon occurring in gemstones.
More about Asterism
The term bezel refers to a type of setting.
More about Bezel
A blemish is an external characteristic of a gem.
More about Blemish
A reflection of white light.
More about Brilliance
A round brilliant cut diamond.
More about Brilliant Cut
A domed cut of gemstone with a flat base.
More about Cabochon
The physical weight of a diamond.
More about Carat
Diamonds are held by two parallel metal walls.
More about Channel Setting
Inclusions determine the clarity of a diamond.
More about Clarity
A break parallel to the weakest direction in the gem.
More about Cleavage
A grading system to judge the colour of a diamond.
More about Colour
The top section of a diamond.
More about Crown
The bottom point of a diamond.More about Culet
The positioning of each of the facets on a diamond.More about Cut
Separation of white light into it's spectral colours.More about Dispersion
A diamond made up of rectangular or square facets.More about Emerald Cut
The unnatural treatment of a gemstone.More about Enhancement
An added facet.More about Extra Facet
A flat polished surface on a diamond or gemstone.More about Facets
Any shape of gemstone other than round brilliant cut.More about Fancy Cuts
Any fracture which is contained within the gemstone.More about Feather
The quality of the polish, facet and girdle.More about Finish
The separation of white light into spectral colours.More about Fire
Occurs within a diamond when the stone is cut too shallow.More about Fish Eye
Visible light some diamonds emit when exposed to UV light.More about Fluorescence
A system to evaluate the quality of a diamond.More about The Four C's
Separates the top of the diamond from the bottom.More about Girdle
The mechanical engraving of lines on metal.More about Guilloche
How well a gemstone resists scratches and abrasions.More about Hardness
Internal clarity characteristic of a diamond.More about Inclusions
A diamond crystal that reaches the surface.More about Knot
A tiny tube made by a laser.More about Laser Drill-Hole
Elongated brilliant-cut with two curved sides and two pointed ends.More about Marquise
Categorises gems by the various levels of scratch resistance.More about Moh's Scale of Hardness
A type of blemish that is part of the original diamond's surfaceMore about Natural
A diamond with two curved sides and two rounded ends.More about Oval
Diamonds are set side-by-side with little metal showing.More about Pave
The bottom section of a diamond.More about Pavilion
Exchanging valuable assets for a cash loan.More about Pawn Broking
A diamond with a pear-shaped outline.More about Pear Cut
A colour phenomena that occurs in some gemstones.More about Play-Of-Colour
The overall condition of the facet surfaces.More about Polish
A diamond with a square outline.More about Princess Cut
Metal that holds a diamond or gemstone in its place.More about Prong
The relationship that exists between each diamond.More about Proportions
This is the most popular diamond cut.More about Round Brilliant Cut
The flashes of light one sees when a diamond moves.More about Scintillation
The metal mounting holding the diamond or gemstone in place.More about Setting
The overall appearance of the stone.More about Shape
Diamonds or gemstones which accentuate the central diamond in a ring.More about Side Stones
A cutting style.More about Step Cut
The centre of the diamond's crown.More about Table
How well a stone resists breaking and chipping.More about Toughness
A ring which contains three gems.More about Three Stones
The reflection of light the observer's eye sees from a diamond.More about White Light
A diamond that is similar in shape to the modern emerald cut.More about Asscher Cut
A traditional Irish symbol.More about Claddagh
A carving technique.More about Cameo
One of the oldest cutting styles.More about Cushion Cut