Which term describes a laser drilling inside a diamond that does not reach the surface?

Which term describes a laser drilling inside a diamond that does not reach the surface?

• A. Kaps
• B. Lamproite
• C. Internal Laser Drilling (ILD)
• D. Knot

Answer: (C)

Internal Laser Drilling describes drilling inside a diamond with a laser in such a way that the channel stays entirely within the stone and does not reach the surface. This technique is used to address dark internal inclusions by creating a tiny tunnel that can be bleached or otherwise treated to reduce their visibility, all while keeping the surface intact. Because the drilling doesn't break through to the exterior, no surface cavity is created, which is what sets this method apart from other approaches that actually reach the surface. The other terms aren’t describing this process: lamproite is a rock type, not a diamond treatment; a knot is a type of inclusion near the surface; kaps isn’t the term used for this internal drilling method.

Internal Laser Drilling describes drilling inside a diamond with a laser in such a way that the channel stays entirely within the stone and does not reach the surface. This technique is used to address dark internal inclusions by creating a tiny tunnel that can be bleached or otherwise treated to reduce their visibility, all while keeping the surface intact. Because the drilling doesn't break through to the exterior, no surface cavity is created, which is what sets this method apart from other approaches that actually reach the surface. The other terms aren’t describing this process: lamproite is a rock type, not a diamond treatment; a knot is a type of inclusion near the surface; kaps isn’t the term used for this internal drilling method.