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DIAMOND ESSENTIALS EXAM 2025 WITH 100%
ACCURATE SOLUTIONS
____ is an important factor in diamond jewelry sales. - ✅✅✅CORRECT -Romance Diamond is a mineral made of a single element: ____ - ✅✅✅CORRECT -Carbon A diamond's value is based on its own unique combination of the ____ - ✅✅✅CORRECT -Four Cs ____ normally have a bigger impact on a diamond's beauty and value than blemishes - ✅✅✅CORRECT - Inclusions Diamond is the most ____ gemstone - ✅✅✅CORRECT - Durable Diamonds are expensive because they're ____ and costly to mine - ✅✅✅CORRECT -Rare
____ ____ are effective diamond sales tools - ✅✅✅CORRECT -Brand names A small, four-sided step cut that's rectangular, square or tapered - ✅✅✅CORRECT -Baguette Clarity characteristic that's confined to the surface of a gemstone - ✅✅✅CORRECT -Blemish Cutting style that's developed, named and promoted by a specific manufacturer - ✅✅✅CORRECT -Branded cut The affect of a diamond's internal and external reflections of white light - ✅✅✅CORRECT -Brightness Cutting style with triangular or kite-shaped facets that radiate from the center towards the girdle - ✅✅✅CORRECT -Brilliant cut
Four value factors (clarify, color, cut and carat weight) that describe the quality of a finished diamond - ✅✅✅CORRECT -Four Cs The narrow section of a finished gem that forms the boundary between the crown and the pavilion and functions as the gem's setting edge - ✅✅✅CORRECT - Girdle How well a gemstone resists scratches and abrasions - ✅✅✅CORRECT -Hardness Clarity characteristic totally enclosed in a polished gemstone or extending into it from the surface - ✅✅✅CORRECT -Inclusion A unit of measurement for the fineness of gold - ✅✅✅CORRECT -Karat The international measurement for gem weight - ✅✅✅CORRECT -Carat
How much is one carat? - ✅✅✅CORRECT -One fifth of a gram Cut that combines brilliant-cut and step-cut styles - ✅✅✅CORRECT -Mixed cut Ranking of relative hardness of 10 minerals - ✅✅✅CORRECT -Mohs scale Lower part of a faceted gem below the girdle - ✅✅✅CORRECT -Pavilion One hundredth of a carat - ✅✅✅CORRECT -Point The flashes of light and contrasting dark you see when the diamond, the light or the observer moves - ✅✅✅CORRECT -Scintillation A natural or man made material that imitates a gem - ✅✅✅CORRECT -Simulant
How well a gemstone resists breaking or chipping - ✅✅✅CORRECT -Toughness Features used to judge the quality and value of gemstones
- ✅✅✅CORRECT -Value factors Even ____ clarity characteristics can have a large influence on diamond value - ✅✅✅CORRECT -Small A ____ is convenient and portable and can be very accurate - ✅✅✅CORRECT -Loupe ____ are useful tools for retail sales presentations - ✅✅✅CORRECT -Microscopes A skilled cutter can often ____ the clarity of a diamond by eliminating or hiding clarity characteristics - ✅✅✅CORRECT -Improve ____ ____ only improves the apparent clarity of a diamond - ✅✅✅CORRECT -Fracture filling
Industry professionals agree that ____ of gem treatments is good business practice - ✅✅✅CORRECT -Disclosure ____ usually only affect the top two clarity grades, while inclusions affect all grades - ✅✅✅CORRECT -Blemishes A ____ ____ is a useful record of a diamond's clarity - ✅✅✅CORRECT -Diamond plot A clearly explained plot can increase a customer's ____ in their purchase and in giu - ✅✅✅CORRECT -Confidence The relationship between clarity, ____, and value is an important tool in sales presentations - ✅✅✅CORRECT - Rarity Stress diamond ____ in sales presentations - ✅✅✅CORRECT -Value
A small, portable magnifying lens used for examining gemstones - ✅✅✅CORRECT -Loupe Term that describes a diamond that might have surface blemishes, but shows no inclusions under 10X magnification - ✅✅✅CORRECT -Loupe clean An individual or company that cuts and polishes diamonds and colored stones - ✅✅✅CORRECT - Manufacturer A general term for included stones - ✅✅✅CORRECT - Piqué A color-keyed diagram of a gemstone's significant clarity characteristics - ✅✅✅CORRECT -Plot Slight differences in color can cause dramatic differences in ____ - ✅✅✅CORRECT -Value
The ___ ___ ___ scale describes the normal color range of diamonds - ✅✅✅CORRECT -D to Z It's difficult to accurately determine a diamond's color grade if it's ____ - ✅✅✅CORRECT -Mounted ____ ____ is not a reliable tool for color grading - ✅✅✅CORRECT -Color memory ____ and a lot of practice are what makes a good diamond grader - ✅✅✅CORRECT -Training The value of colored diamond's generally increases with the strength and ____ of the color - ✅✅✅CORRECT - Purity Diamond's can be treated to alter or add color by coating, ____, heating or by a combination of irradiation and heating - ✅✅✅CORRECT -Irradiation
Emission of visible light by a material when it's exposed to ultraviolet radiation - ✅✅✅CORRECT -Fluorescence Your first impression of a color; the basic color of an object - ✅✅✅CORRECT -Hue A treatment that changes the color of a gem by exposing it to radioactive materials - ✅✅✅CORRECT -Irradiation A set of color comparison diamonds that defines GIA's diamond color grades in the normal D to Z range - ✅✅✅CORRECT -Masterstones A general term for diamonds in the G to J color range - ✅✅✅CORRECT -Near colorless Range of diamond colors from colorless to light yellow, brown and gray - ✅✅✅CORRECT -Normal color range A color's strength or intensity, ranging from a dull hue to a pure, vivid hue - ✅✅✅CORRECT -Saturation
A color's degree of darkness or lightness - ✅✅✅CORRECT -Tone Light wavelength that's invisible to the human eye - ✅✅✅CORRECT -Ultraviolet Cut isn't only about ____: it affects many aspects of a diamond's appearance - ✅✅✅CORRECT -Shape ____ play a key role in a diamond's appearance - ✅✅✅CORRECT -Proportions ____ ____ usually deliver excellent brightness, fire and scintillation - ✅✅✅CORRECT -Round brilliants An excellent/excellent polish and symmetry rating adds ____ value to a well proportioned diamond - ✅✅✅CORRECT -Maximum
Face-up shape of a polished gem - ✅✅✅CORRECT - Girdle outline Comparison of the length to width of a fancy-shaped diamond - ✅✅✅CORRECT -Length to width ratio The qualities of a faceted diamond's proportions and finish - ✅✅✅CORRECT -Make The angle formed by the pavilion man in facets and the girdle plane - ✅✅✅CORRECT -Pavilion angle Larger-than-usual pavilion angles on the middle tier of facets, designed to add weight to a step-cut stone - ✅✅✅CORRECT -Pavilion bulge The distance from the bottom of the girdle plane to its culet, expressed as a percentage of the average girdle diameter - ✅✅✅CORRECT -Pavilion depth percentage The overall condition of the facet surfaces of a finished diamond - ✅✅✅CORRECT -Polish
The angles and relative measurements of a polished gem, and the relationships between them - ✅✅✅CORRECT - Proportions The change in the speed and possible change in direction of light as it travels from one transparent material to another - ✅✅✅CORRECT -Refraction A measure of the change in speed and angle of light as it passes from one material to another - ✅✅✅CORRECT - Refractive index One of the two sides adjacent to the rounded end of a pear or oval shape - ✅✅✅CORRECT -Shoulder The exactness of a finished gem's shape and the placement of its facets - ✅✅✅CORRECT -Symmetry Table size expressed as a percentage of the round brilliant's average girdle diameter - ✅✅✅CORRECT - Table percentage
Most jewelry professionals use ____ balances to weigh unmounted diamonds - ✅✅✅CORRECT -Electronic When you record a diamond's dimensions, always state whether they're ____ or estimated - ✅✅✅CORRECT - Actual A ____ ____ is very useful for measuring mounted stones
- ✅✅✅CORRECT -Millimeter gauge Always ____ the diamond after recording the measurements to be sure they make sense - ✅✅✅CORRECT -Examine Stress rarity to explain ____ - ✅✅✅CORRECT -Value The distance from the table to the culet of a polished gem
- ✅✅✅CORRECT -Depth A trade term for a diamond that weighs between .96 ct. and .99 ct. - ✅✅✅CORRECT -Light carat
A trade term for a diamond that weighs between .45 ct. and .49 ct. - ✅✅✅CORRECT -Light half Very small faceted diamonds - ✅✅✅CORRECT -Melee The price of a diamond divided by its weight - ✅✅✅CORRECT -Per carat price The combined weight of all the stones in a piece of jewelry that contains a variety of gems - ✅✅✅CORRECT -Total gem weight The combined weight if all of the diamonds in a piece of jewelry that only contains diamonds - ✅✅✅CORRECT - Total weight ____ is a prime concern in the jewelry industry - ✅✅✅CORRECT -Security
