GIA CSE~3321 Glossary

Additional merchandise sold to a customer in an ongoing transaction. (Colored Stone Essentials: Assignment 7)

The cloudy bluish white light in a moonstone, caused by scattering of light. (Colored Stone Essentials: Assignment 2)

Lacking a regular crystal structure. (Colored Stone Essentials: Assignment 1)

Crossing of chatoyant bands, creating a star in the dome of a cabochon. (Colored Stone Essentials: Assignment 2)

A glittery effect caused by light reflecting from small, flat inclusions within a gemstone. (Colored Stone Essentials: Assignment 2)

The value a feature holds for a customer. (Colored Stone Essentials: Assignment 7)

A treatment that uses chemicals to lighten or remove color. (Colored Stone Essentials: Assignment 5)

Characteristic or irregularity confined to the surface of a polished gemstone. (Colored Stone Essentials: Assignment 3)

A purchase made without any research or prior knowledge. (Colored Stone Essentials: Assignment 7)

A gemstone's basic color, determined by its selective absorption of light. (Colored Stone Essentials: Assignment 2)

Cutting style with triangular or kite-shaped facets that radiate from the center toward the girdle. (Colored Stone Essentials: Assignment 3)

A customer's "fear" of buying. (Colored Stone Essentials: Assignment 7)

A smoothly rounded polished gem with a domed top and a flat or curved base. (Colored Stone Essentials: Assignment 3)

Gemstone sizes cut to fit standard mountings. (Colored Stone Essentials: Assignment 3)

A gem carving style in which the design, often a woman's profile, projects slightly from a flat or curved surface. (Colored Stone Essentials: Assignment 3)

Treatment that fills and seals voids to improve appearance and add weight. (Colored Stone Essentials: Assignment 5)

Bands of light in certain gems, caused by reflection of light from many parallel, needle-like inclusions or hollow tubes. (Colored Stone Essentials: Assignment 2)

Kinds and relative quantities of atoms that make up a material. (Colored Stone Essentials: Assignment 1)

Written description of a material's chemical make-up. (Colored Stone Essentials: Assignment 1)

A gemstone's relative freedom from inclusions and blemishes. (Colored Stone Essentials: Assignment 3)

Internal or external feature of a gemstone that helps determine its quality. (Colored Stone Essentials: Assignment 3)

A smooth, flat break in a gemstone parallel to planes of atomic weakness. (Colored Stone Essentials: Assignment 3)

A question that requires only a "yes" or "no" response. (Colored Stone Essentials: Assignment 7)

The number of successful sales compared to the number of total sales attempts. (Colored Stone Essentials: Assignment 7)

A small defect in the atomic structure of a material that can absorb light and give rise to a color. (Colored Stone Essentials: Assignment 2)

A distinct change in gem color under different types of lighting. (Colored Stone Essentials: Assignment 2)

Any gem material other than diamond. (Colored Stone Essentials: Assignment 1)

Filling of pores or other openings with melted wax, resin, polymer, or plastic to improve appearance and stability. (Colored Stone Essentials: Assignment 5)

The selection of colors in which a gemstone occurs. (Colored Stone Essentials: Assignment 2)

Areas of different color in a gem, caused by variations in growth conditions. (Colored Stone Essentials: Assignment 2)

Market sector where average-quality gemstones are used in mass-market jewelry. (Colored Stone Essentials: Assignment 4)

A way to overcome objections by acknowledging part of the initial objection, then inserting a compensating benefit. (Colored Stone Essentials: Assignment 7)

A curved and ridged fracture in a gemstone, extending from the surface inward. (Colored Stone Essentials: Assignment 6)

The network of tiny fractures that develops when an opal loses moisture. (Colored Stone Essentials: Assignment 6)

Regular, repeating internal arrangement of atoms in a material. (Colored Stone Essentials: Assignment 1)

A city, region, or country with a large number of gemstone manufacturers. (Colored Stone Essentials: Assignment 4)

A wholesaler. (Colored Stone Essentials: Assignment 4)

The weight of an object in relation to its size. (Colored Stone Essentials: Assignment 3)

Artistic gem cuts that aren't limited to specific proportions or shapes. (Colored Stone Essentials: Assignment 3)

A direct way to correct a customer's misconceptions. (Colored Stone Essentials: Assignment 7)

Clearly and accurately informing customers about the nature of the goods they buy. (Colored Stone Essentials: Assignment 5)

The separation of white light into spectral colors. (Colored Stone Essentials: Assignment 2)

Two separate pieces of material fused or cemented together to form a single assembled stone. (Colored Stone Essentials: Assignment 5)

A gemstone's ability to withstand wear, heat, and chemicals. (Colored Stone Essentials: Assignment 1)

A treatment that adds color or affects color by deepening it, making it more even, or changing it. (Colored Stone Essentials: Assignment 5)

Rules or standards governing personal or professional conduct. (Colored Stone Essentials: Assignment 5)

Dark areas in a faceted transparent colored stone. (Colored Stone Essentials: Assignment 2)

Description for a gem with inclusions visible only under magnification. (Colored Stone Essentials: Assignment 3)

A flat, polished surface on a finished gem. (Colored Stone Essentials: Assignment 3)

Any gemstone shape other than round. (Colored Stone Essentials: Assignment 3)

A free-form cut that can feature alternating curved and flat surfaces. (Colored Stone Essentials: Assignment 3)

Another term for gem cutting and polishing. (Colored Stone Essentials: Assignment 4)

Inexpensive, or "costume," jewelry, often composed of materials other than precious metals and gemstones. (Colored Stone Essentials: Assignment 4)

A general term for a break in a stone. (Colored Stone Essentials: Assignment 3)

A characteristic or part of a piece of jewelry. (Colored Stone Essentials: Assignment 7)

A US Government agency that issues guidelines for the jewelry trade. (Colored Stone Essentials: Assignment 1)

Small components used to make or repair jewelry. (Colored Stone Essentials: Assignment 6)

The color or colors in a gemstone's color range considered by the trade to be the most desirable. (Colored Stone Essentials: Assignment 2)

The quality of the polish and precision of the cut of a fashioned gemstone. (Colored Stone Essentials: Assignment 3)

A process in which powdered chemicals are dropped through a high-temperature flame onto a rotating pedestal to produce a synthetic crystal. (Colored Stone Essentials: Assignment 5)

Small pocket in a gem that's filled with fluids and, sometimes, gas bubbles and tiny crystals. (Colored Stone Essentials: Assignment 3)

Emission of visible light by a material when it's stimulated by ultraviolet radiation. (Colored Stone Essentials: Assignment 2)

A process in which nutrients dissolve in heated chemicals, then cool to form synthetic crystals. (Colored Stone Essentials: Assignment 5)

Any break in a gem other than cleavage or parting. (Colored Stone Essentials: Assignment 3)

Using a filler to conceal fractures and improve the apparent clarity of a gem. (Colored Stone Essentials: Assignment 5)