Antieke juwelen glossarium
(verklarende woordenlijst)

A - B - C - D - E - F - G - H - I - J - K - L - M - O - P - Q - R - S - T - U - V - W - X - Y - Z         (alles)

Irradiation

The process of exposing certain gemstones to a radioactive substance with the effect of artificially inducing a change of colour. This has been done with some diamonds. The original colours are sometimes partly restored by heating.

From: An Illustrated Dictionary of Jewelry, autor: Harold Newman, publishers: Thames and Hudson