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GIA Diamond Essentials Final Exam | Questions And Answers Latest {} A+ Graded | 100% Verified
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GIA Diamond Essentials Final Exam | Questions And Answers Latest {} A+ Graded | 100% Verified
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GIA Diamond Essentials Final Exam | Questions And Answers Latest {2024- 2025} A+Graded | 100% Verified
Crown - Top part of the gem above the girdle
Culet - Small facet at the bottom of a finished gem
Durability - A gemstone's ability to withstand wear, heat, and chemicals
Facet - A flat, polished surface on a finished gem
Fancy cut - Any gemstone shape or cutting style other than a standard round brilliant
Fire - The flashes of colour you see in a polished diamond
Four Cs - Four value factors (clarity, colour, cut, and carat weight) that describe the quality of a finished
gem and also relates primarily to its value
Girdle - 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
Hardness - How well a gemstone resists scratches and abrasion
Inclusion - Clarity characteristic totally enclosed in a polished gemstone or extending into it from the
surface
Karat - A unit for the fineness of gold, abbreviated "K" or "Kt"
Metric carat - The international unit of measure for gram weight. One carat equals one-fifth of a gram
(0.200g)
,Mixed cut - Cut that combines brilliant-cut and step-cut styles
Mohs scale - Ranking of the relative hardness of 10 minerals
Pavilion - Lower part of a faceted gem below the girdle
Point - One hundredth of a carat (0.01ct)
Scintillation - The flashes of light and the contrasting dark areas you see when the diamond, the light, or
the observer moves
Simulant - A natural or manmade material that resembles a gem (also called imitation)
Single cut - A round stone with 17 or 18 facets
Stability - How well a diamond resists chemicals and temperature changes
Standard round brilliant - A round brilliant-cut stone with 57 or 58 facets. Often called a full cut
Step cut - A cutting style that features long narrow facets in rows parallel to the girdle on both the
crown and pavilion
Synthetic gem - A manmade gem with essentially the same chemical composition, crystal structure, and
properties as a natural gem
Thermal shock - Damages caused by sudden, extreme temperature changes
Toughness - How well a gemstone resists breaking and chipping
Value factors - Features used to judge the quality and value of all gemstones
, Carbon - The mineral diamonds are primarily composed of
Crown, pavilion, and girdle - The three major parts of a diamond
A ton of rock - What a mine must process to recover a half carat of diamond
Brilliant cut - Cutting style with triangular or kite-shaped facets that radiate from the center toward the
girdle
Blemishes - Clarity characteristics confined to the surface of a polished diamond
Nearly colourless to a very light yellow, light brown, or light grey - Most diamonds used in jewellery
Diamond - Most durable gemstone. Also expensive due to rarity and how costly it is to mine
Baguette - A small, four-sided step cut that's rectangular, square, or tapered
Branded cut - Cutting style that's developed, named and promoted by a specific manufacturer
Brightness - The effect of all the diamond's internal and external reflections of white light
Clarity characteristics - The collective term for inclusions and blemishes
Apparent clarity - A term used to describe the effects of treatments on the visual appeal of a gemstone
Binocular microscope - A tabletop magnifier with two eyepieces
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