soft-spoken adjective. âº usually âspeaking in a âquiet âvoice: a soft-spoken, âunderstated âstyle. (Definition of soft-spoken from the Cambridge Academic Content Dictionary Â© Cambridge University Press).
The laser drilling process involves the use of an infrared laser (of surgical grade at a wavelength about 1064 nm) to bore very fine holes (less than 0.2 millimeters or 0.005 inches in diameter) into a diamond to create a route of access to a black carbon crystal inclusion.
Letâs learn more. Laser Drill Holes. A laser drill hole is a microscopic tube or tunnel that is present in the diamond as a result of laser drilling. The hole would have usually been bleached using a special cleaning solution and is likely to remain as a small light colored inclusion invisible to the naked eye.