Lasering

Lasering, or laser drilling, is the use of a high-powered laser to burn a hole into a gemstone (usually a diamond) to gain access to inclusions within the crystal.
The laser bores a hole of around 0.1mm to create an access channel where a chemical agent, such as sulphuric acid, can then gain access to the inclusion and dissolve it.

The hole is then filled with a glass of similar refractive index to the diamond, although this glass filling can be quite easily detected under a microscope. It may include straight or slightly wavy opaque lines, it may contain bubbles or flow lines, and there may be dark circles where the hole meets the surface of the crystal.
Treatment List