Clarity and Value

Question 1

What are clarity characteristics limited to the surface of a diamond called?

Answer 1

Blemishes

Question 2

What is the standard magnification used for clarity grading?

Answer 2

10X

Question 3

What is the detailed map of a diamond, showing its clarity characteristics, called?

Answer 3

Plot

Question 4

What is the most convenient and inexpensive magnifier adequate for diamond grading?

Answer 4

A loupe

Question 5

What is the general term for clarity characteristics in a diamond called?

Answer 5

Inclusions

Question 6

When part of a rough crystal’s original surface is left on a fashioned diamond, what is it called?

Answer 6

Natural

Question 7

A diamond that’s graded Flawless might still have…

Answer 7

extra facets on the pavilion not visible faceup.

Question 8

What is it called when an included diamond crystal reaches the surface of a cut diamond?

Answer 8

Knot

Question 9

What is the best term to use when describing inclusions to customers?

Answer 9

Clarity characteristics

Question 10

What are the five factors that determine the overall effect of inclusions called?

Answer 10

Size, number, location (position), relief, and nature.

Question 11

What is the general term for any break in a diamond?

Answer 11

Feather

Question 12

What can fracture filling dramatically affect in a diamond?

Answer 12

It’s apparent clarity.

Question 13

What is the result of the bruting process?

Answer 13

Bearding

Question 14

A diamond with “noticeable” inclusions at 10X would receive what clarity grade?

Answer 14

SI1 or SI2

Question 15

What should you tell customers the “SI” designation means?

Answer 15

Slightly Included

Question 16

Which clarity rating is where the extra facets are not visible in the face-up view?

Answer 16

Flawless

Question 17

Which clarity rating is where the naturals are confined entirely to the girdle, as long as they don’t thicken the girdle or distort its outline.

Answer 17

Flawless

Question 18

Which clarity rating is where the internal graining is not reflective, white, or colored, and that doesn’t significantly affect transparency?

Answer 18

Flawless

Question 19

Which clarity rating is where the inscriptions that don’t appear to penetrate the surface when viewed at 10X?

Answer 19

Flawless

Question 20

Which clarity rating is where you can see no inclusions under 10X magnification, but has some minor blemishes?

Answer 20

Internally Flawless (IF)

Question 21

Which clarity rating is where the diamond includes inclusions that range from extremely difficult to very difficult to see at 10X magnification?

Answer 21

Very Very Slightly Included (VVS1, VVS2)

Question 22

Which clarity rating is where the diamond contains minor inclusions that range from difficult to somewhat easy to see at 10X magnification?

Answer 22

Very Slightly Included (VS1, VS2)

Question 23

What are the highest grades found at most fine retail stores?

Answer 23

VVS to VS ranges

Question 24

Which clarity rating is where the diamond contains noticeable inclusions that are easy or very easy to see at 10X magnification?

Answer 24

Slightly Included (SI1, SI2)

Question 25

Which clarity rating is where the diamond contains inclusions that are obvious under 10X magnification?

Answer 25

Included (I1, I2, I3)

Question 26

Apparent Clarity

Answer 26

A term used to describe the effects of treatments on the visual appeal of a gemstone.

Question 27

Binocular Microscope

Answer 27

A tabletop magnifier with two eyepieces.

Question 28

Bruting

Answer 28

Forming the basic face-up outline of a round or rounded-shape diamond to prepare it for faceting.

Question 29

Feather

Answer 29

A collective term for diamond cleavages and fractures.

Question 30

Fracture Filling

Answer 30

Treatment that involves injecting a molten glass substance into a diamond's surface-reaching feathers or laser drill-holes.

Question 31

Laser Drilling

Answer 31

Treatment that involves using a concentrated beam of laser light to reach a diamond's dark inclusions and to disguise or eliminate them.

Question 32

Loupe

Answer 32

A small, portable magnifying lens used for examining gemstones.

Question 33

Loupe Clean

Answer 33

A term that describes a diamond that might have surface blemishes, but shows no inclusions under 10X magnification.

Question 34

Pique

Answer 34

A general term for included stones.

Question 35

Plot

Answer 35

A color-keyed diagram of a gemstone's significant clarity characteristics.