GIA DIAMONDS AND DIAMOND GRADING FINAL EXAM
2025/2026 ALL COMPLETE ACCURATE EXAM ACTUAL
QUESTIONS WITH WELL ELABORATED ANSWERS (100%
CORRECT VERIFIED ANSWERS) LATEST UPDATED
VERSION |GUARANTEED PASS.
The smallest group of atoms with a characteristic chemical composition
and the basic crystal structure of a mineral is called a(n)
Answer- Unit cell
The crystal planes most suitable for cleaving a diamond are the
Answer- Octahedral planes
,Crystal shape is an important factor in the evaluation of rough because
Answer- It affects the amount of weight retained after cutting
Which is the softest crystal direction in diamond
Answer- Dodecahedral
The strongest of all atomic bonds are called
Answer- Covalent
Atoms in a gem that aren't part of its essential chemical composition are
called
,Answer- Trace elements
Squares or rectangles, trigons, and parallel grooves are types of
Answer- Growth marks
A flat, triangular twinned diamond crystal is called a
Answer- Macle
Solid matter with atom arranged in a regular, repeating pattern is called
a(n)
Answer- Crystal
In diamonds, cleavage is caused by
Answer- Relatively wide spaces between some atomic planes
, Another name for the cubic crystal system is
Answer- Isometric
White light is actually
Answer- A combination of all the spectral colors
Visible light is
Answer- A form of radiant energy
The combination effect of all the diamond's surface and internal white
light reflections is its
Answer- Brightness
In order to exit a diamond, light must strike an inner surface
Answer- Inside the critical angle
The higher the optical density or a material the
2025/2026 ALL COMPLETE ACCURATE EXAM ACTUAL
QUESTIONS WITH WELL ELABORATED ANSWERS (100%
CORRECT VERIFIED ANSWERS) LATEST UPDATED
VERSION |GUARANTEED PASS.
The smallest group of atoms with a characteristic chemical composition
and the basic crystal structure of a mineral is called a(n)
Answer- Unit cell
The crystal planes most suitable for cleaving a diamond are the
Answer- Octahedral planes
,Crystal shape is an important factor in the evaluation of rough because
Answer- It affects the amount of weight retained after cutting
Which is the softest crystal direction in diamond
Answer- Dodecahedral
The strongest of all atomic bonds are called
Answer- Covalent
Atoms in a gem that aren't part of its essential chemical composition are
called
,Answer- Trace elements
Squares or rectangles, trigons, and parallel grooves are types of
Answer- Growth marks
A flat, triangular twinned diamond crystal is called a
Answer- Macle
Solid matter with atom arranged in a regular, repeating pattern is called
a(n)
Answer- Crystal
In diamonds, cleavage is caused by
Answer- Relatively wide spaces between some atomic planes
, Another name for the cubic crystal system is
Answer- Isometric
White light is actually
Answer- A combination of all the spectral colors
Visible light is
Answer- A form of radiant energy
The combination effect of all the diamond's surface and internal white
light reflections is its
Answer- Brightness
In order to exit a diamond, light must strike an inner surface
Answer- Inside the critical angle
The higher the optical density or a material the
