Assignment 3

Question 0

Cutting style with triangular or kite-shaped facets that radiate from the center toward the girdle

Answer 0

Brilliant cut

Question 1

Characteristic or irregularity confined to the surface of a polish gemstone

Answer 1

Blemish

Question 2

A smoothly rounded polished gem with a domed top and a flat or curved base

Answer 2

Cabochon

Question 3

Gemstone sizes cut to fit standard mountings

Answer 3

Calibrated sizes

Question 4

I gem carving style in which the design, often a woman’s profile, project slightly from a flat or curved surface

Answer 4

Cameo

Question 5

Internal or external feature of a gemstone that helps determine its quality

Answer 5

Clarity characteristics

Question 6

A gemstone’s relative freedom from inclusions and blemishes

Answer 6

Clarity

Question 7

A smooth, flat break in a gemstone parallel to planes of atomic weakness

Answer 7

Cleavage

Question 8

The weight of an object in the relation to its size

Answer 8

Density

Question 9

Artistic gem cuts that aren’t limited to specific proportions or shapes

Answer 9

Designer cuts

Question 10

Description for a gem with inclusions visible only under magnification

Answer 10

Eye-clean

Question 11

A flat, polished surface on the finished gem

Answer 11

Facet

Question 12

Any gemstone shape other than round

Answer 12

Fancy shape

Question 13

A free-form cut that can feature alternating curved and flat surfaces

Answer 13

Fantasy cut

Question 14

A general term for a break in a stone.

Answer 14

Feather

Question 15

The quality of the polish and precision of the cut of a fashioned gemstone

Answer 15

Finish

Question 16

Small pocket in a gem that’s filled with fluids and, sometimes, gas bubbles and tiny crystals

Answer 16

Fluid inclusion

Question 17

Any break in a gem other than cleavage or parting

Answer 17

Fracture

Question 18

A mineral crystal trapped within a gem as it grows

Answer 18

Included crystal

Question 19

A characteristic enclosed within a gemstone, or reaching its surface from the interior

Answer 19

Inclusion

Question 20

A design engraved into the surface of a gemstone

Answer 20

Intaglio

Question 21

The international unit of measurement for gem weight (1 carat equal 0.20 gram)

Answer 21

Metric carat

Question 22

A cutting style that combines brilliant-cut and step-cut facets

Answer 22

Mixed cut

Question 23

A flat break in a gemstone parallel to a twinning plane

Answer 23

Parting

Question 24

The price of the gem divided by its carat weight

Answer 24

Per-carat price

Question 25

One one-hundredth of a carat (0.01 ct.)

Answer 25

Point

Question 26

The angles and relative measurements of a polished gem, and the relationships between them

Answer 26

Proportions

Question 27

Flashes of light displayed by a polished gemstone when the gem, the observer, or the light source moves

Answer 27

Scintillation

Question 28

The face-up outline of a gem

Answer 28

Shape

Question 29

Group of fine needle-like inclusions

Answer 29

Silk

Question 30

Ratio of the weight of a material to the weight of an equal volume of water

Answer 30

Specific gravity (SG)

Question 31

Cutting style with mainly square and rectangular facets arranged in concentric rows

Answer 31

Step cup

Question 32

The arrangement of a stone’s facets

Answer 32

Style

Question 33

The combined weight of all the stones in a piece of jewelry that contains a variety of gems

Answer 33

Total gem weight

Question 34

Location of a change of direction in a gemstone’s crystal structure during growth

Answer 34

Twinning plane