GIA DIAMOND ESSENTIALS QUESTIONS
WITH CORRECT ANSWERS
What are Lab Grown Diamonds - CORRECT ANSWER -refers to a manmade (synthetic) material
with the same chemical composition, crystal structure, and optical and physical properties as
the natural gem material.
When did Gem quality lab growns start being made - CORRECT ANSWER -Gem-quality lab-
grown diamonds have been commercially produced in limited quantities since the mid-1990s.
What impacts value more, blemishes or inclusions - CORRECT ANSWER -Inclusions normally
have more impact on a stone's beauty and value than blemishes. That's because many
blemishes are relatively easy to remove. A fashioned diamond can sometimes be recut or
repolished to remove or reduce grade-setting characteristics, possibly resulting in a higher
clarity grade. Whether or not a diamond's clarity can be improved depends on the depth of the
grade-setting characteristics, the presence of other characteristics, and the weight of the
diamond. Removing too much weight can lower a diamond's value, even while improving its
clarity.
What are diamonds made of - CORRECT ANSWER -Diamond is the only gem made of a single
element: carbon. Diamond is typically about 99.95 percent carbon. The other 0.05 percent can
include one or more trace elements, which are atoms that aren't part of a diamond's essential
chemistry. Some of them can influence its color or shape.
special terms for manufactured and look-alike gemstones: - CORRECT ANSWER -Simulants
Brilliance - CORRECT ANSWER -the combination of all the white light reflections from the
surface and the inside of a diamond.
Fire - CORRECT ANSWER -the word for the flashes of color you see in a polished diamond.
WITH CORRECT ANSWERS
What are Lab Grown Diamonds - CORRECT ANSWER -refers to a manmade (synthetic) material
with the same chemical composition, crystal structure, and optical and physical properties as
the natural gem material.
When did Gem quality lab growns start being made - CORRECT ANSWER -Gem-quality lab-
grown diamonds have been commercially produced in limited quantities since the mid-1990s.
What impacts value more, blemishes or inclusions - CORRECT ANSWER -Inclusions normally
have more impact on a stone's beauty and value than blemishes. That's because many
blemishes are relatively easy to remove. A fashioned diamond can sometimes be recut or
repolished to remove or reduce grade-setting characteristics, possibly resulting in a higher
clarity grade. Whether or not a diamond's clarity can be improved depends on the depth of the
grade-setting characteristics, the presence of other characteristics, and the weight of the
diamond. Removing too much weight can lower a diamond's value, even while improving its
clarity.
What are diamonds made of - CORRECT ANSWER -Diamond is the only gem made of a single
element: carbon. Diamond is typically about 99.95 percent carbon. The other 0.05 percent can
include one or more trace elements, which are atoms that aren't part of a diamond's essential
chemistry. Some of them can influence its color or shape.
special terms for manufactured and look-alike gemstones: - CORRECT ANSWER -Simulants
Brilliance - CORRECT ANSWER -the combination of all the white light reflections from the
surface and the inside of a diamond.
Fire - CORRECT ANSWER -the word for the flashes of color you see in a polished diamond.
