Which term describes a rough diamond that is suitable for polishing into a gem?

Which term describes a rough diamond that is suitable for polishing into a gem?

• A. Crystalline
• B. Cuttable rough
• C. Crystal shape
• D. Crystal planes

Answer: (B)

Cuttable rough describes rough diamonds that have the potential to be polished into a gem. It means the stone has suitable size and quality, with no deep cracks or major flaws that would cause excessive loss during cutting, so it can yield a marketable gemstone with good carat weight. The other terms describe crystal structure or shape in general—crystalline refers to the lattice arrangement, crystal shape to the crystal’s external form, and crystal planes to the faces of the crystal—rather than indicating whether the rough can be turned into a gem.

Cuttable rough describes rough diamonds that have the potential to be polished into a gem. It means the stone has suitable size and quality, with no deep cracks or major flaws that would cause excessive loss during cutting, so it can yield a marketable gemstone with good carat weight. The other terms describe crystal structure or shape in general—crystalline refers to the lattice arrangement, crystal shape to the crystal’s external form, and crystal planes to the faces of the crystal—rather than indicating whether the rough can be turned into a gem.