Which term describes a tiny, surface-reaching tunnel produced by a laser light beam?

Which term describes a tiny, surface-reaching tunnel produced by a laser light beam?

• A. Lamproite
• B. Irradiation
• C. Kaps
• D. Laser Drill-hole (LDH)

Answer: (D)

In diamond treatments, the term that describes a tiny tunnel starting at the surface and running inward is Laser Drill-hole, often abbreviated LDH. This describes the actual physical channel created when a focused laser beam is aimed from the diamond’s surface toward an internal inclusion to reach it. The hole is typically very small and may be visible only under magnification; it can be left as a small mark or sealed with resin after treatment. The other terms don’t fit this specific idea: lamproite is a type of diamond-bearing rock, irradiation refers to color changes achieved by exposure to radiation rather than forming a hole, and Kaps isn’t the standard term used for laser-created tunnels. So the best descriptor for a surface-reaching laser-produced tunnel is Laser Drill-hole.

In diamond treatments, the term that describes a tiny tunnel starting at the surface and running inward is Laser Drill-hole, often abbreviated LDH. This describes the actual physical channel created when a focused laser beam is aimed from the diamond’s surface toward an internal inclusion to reach it. The hole is typically very small and may be visible only under magnification; it can be left as a small mark or sealed with resin after treatment. The other terms don’t fit this specific idea: lamproite is a type of diamond-bearing rock, irradiation refers to color changes achieved by exposure to radiation rather than forming a hole, and Kaps isn’t the standard term used for laser-created tunnels. So the best descriptor for a surface-reaching laser-produced tunnel is Laser Drill-hole.