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Diamond Essentials > Clarity and Value > Flashcards

Clarity and Value Flashcards

1
Q

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

A

Blemishes

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2
Q

What is the standard magnification used for clarity grading?

A

10X

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3
Q

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

A

Plot

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4
Q

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

A

A loupe

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5
Q

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

A

Inclusions

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6
Q

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

A

Natural

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7
Q

A diamond that’s graded Flawless might still have…

A

extra facets on the pavilion not visible faceup.

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8
Q

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

A

Knot

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9
Q

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

A

Clarity characteristics

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10
Q

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

A

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

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11
Q

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

A

Feather

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12
Q

What can fracture filling dramatically affect in a diamond?

A

It’s apparent clarity.

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13
Q

What is the result of the bruting process?

A

Bearding

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14
Q

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

A

SI1 or SI2

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15
Q

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

A

Slightly Included

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16
Q

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

A

Flawless

17
Q

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.

A

Flawless

18
Q

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

A

Flawless

19
Q

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

A

Flawless

20
Q

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

A

Internally Flawless (IF)

21
Q

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

A

Very Very Slightly Included (VVS1, VVS2)

22
Q

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

A

Very Slightly Included (VS1, VS2)

23
Q

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

A

VVS to VS ranges

24
Q

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

A

Slightly Included (SI1, SI2)

25
Q

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

A

Included (I1, I2, I3)

26
Q

Apparent Clarity

A

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

27
Q

Binocular Microscope

A

A tabletop magnifier with two eyepieces.

28
Q

Bruting

A

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

29
Q

Feather

A

A collective term for diamond cleavages and fractures.

30
Q

Fracture Filling

A

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

31
Q

Laser Drilling

A

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

32
Q

Loupe

A

A small, portable magnifying lens used for examining gemstones.

33
Q

Loupe Clean

A

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

34
Q

Pique

A

A general term for included stones.

35
Q

Plot

A

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

Diamond Essentials (5 decks)

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