Ass # 5 - Key Terms

What defines an atom in the context of matter?

Which term describes a smooth, flat break in a crystal?

What is the definition of a crystalline material?

What does 'doubly refractive' mean in terms of crystal properties?

Which term refers to visible shadow-like lines seen in a crystal?

In crystallography, what is meant by a glide plane?

What does 'specific gravity' measure in a material?

What refers to the characteristic crystal shape or form of a mineral?

What is defined as the force required to produce distortion in a crystal lattice?

Which type of diamond contains no easily measurable nitrogen or boron impurities?

What is a point defect that occurs when an atom is missing from its original position in the crystal lattice?

Which of the following describes a triangular depression or protrusion occurring on a diamond's octahedral faces?

What is the smallest group of atoms with the distinctive chemical composition and crystal structure of a mineral called?

Which type of diamond contains boron replacing carbon atoms in its crystal lattice?

What concept explains that the more dislocations present in a crystal, the more strain it experiences?

What type of defect is indicated by mineral inclusions and voids in a diamond?

What describes the characteristic geometric shape of a crystal?

Which of the following describes the regular, repeating arrangement of atoms in a mineral?

What term refers to an imperfection or deviation in a crystal lattice regarding a point?

Which type of bond is formed by two atoms sharing electrons?

Which of the following best describes the process in which a diamond's outer surface is partially dissolved?

What term is used for a solid mass of individual crystals held together by a natural binding agent?

What defines a set of parallel and evenly spaced planes distributed along certain crystal directions in which atoms are more closely packed?

Which term is used to describe minerals that possess different physical and optical properties in different directions?

What structural form is considered the most common habit of a gem diamond?

Which type of diamond has nitrogen atoms replacing carbon atoms in its crystal lattice?

Which of the following describes the point defect created when an atom is missing from its original position in the crystal lattice?

What term refers to the three-dimensional imperfection or deviation in the arrangement of atoms in a crystal lattice ?

Which category of defects in diamonds does not include mineral inclusions and voids?

What is the most precise method for determining the type of diamond?

What formation in diamonds consists of two or more parts that share crystal planes in a symmetrical manner?

What always mimics the habit of the host in crystallography?

Solid matter with atoms arranged in a regular, repeating pattern is ?

A reference system used to describe the symmetry and shape of crystals is ?

The geometric shape of a well-formed crystal is ?

Categories of crystals based on their symmetry and internal structure is ?

A well-shaped, transparent octahedral diamond crystal with sharp, square edges is ?

Visible features on the surface of a mineral crystal that reflect its internal growth and development is ?

Imperfection or deviation from the ideal arrangement of atoms in relation to a line in the crystal lattice is ?

A flat, triangular twinned diamond crystal is ?

A crystal shape with eight equal triangular faces is ?

Possessing the same physical or optical properties in all crystal directions is ?

The study of the interaction between matter and light is ?

Distortion or deformation in a crystal is ?

In diamond, a group of five carbon atoms with one at the center is ?

Atoms in a gem that aren’t part of its essential chemical composition is ?

What is the strongest of all atomic bonds?

Diamond’s atoms are more closely.......

Defects in diamond are ......

Three categories of defects are common in diamonds:.....

The foundation of the diamond type classification system is the .........

Most type I diamonds are a mix of ......

It is easier to polish against .....

A trigon indicates an........

The macle is the most common.........

All diamonds, regardless of their external appearance, contain cubic, octahedral, and .......

Diamond’s octahedral planes are......

A combination of octahedral and dodecahedral forms can be caused by ........

Cubic planes provide the most efficient sawing directions for dividing.....

Shape is the single most important value factor for ....