Which term refers to a mineral crystal contained in a diamond?

Which term refers to a mineral crystal contained in a diamond?

• A. Crystal (Xtl)
• B. Cuttable rough
• C. Culet size
• D. Crystalline

Answer: (A)

Inclusions inside a diamond are described by the specific material inside. When a mineral crystal is trapped inside the stone, it’s called a crystal inclusion. That makes Crystal the best term here, since it naming the actual mineral inclusion inside the diamond (often noted as Xtl in practice materials). The other terms don’t fit: crystalline is an adjective about crystal structure, culet size concerns the tiny bottom facet, and cuttable rough refers to the rough, uncut diamond—none of which name the internal mineral crystal.

Inclusions inside a diamond are described by the specific material inside. When a mineral crystal is trapped inside the stone, it’s called a crystal inclusion. That makes Crystal the best term here, since it naming the actual mineral inclusion inside the diamond (often noted as Xtl in practice materials). The other terms don’t fit: crystalline is an adjective about crystal structure, culet size concerns the tiny bottom facet, and cuttable rough refers to the rough, uncut diamond—none of which name the internal mineral crystal.