Producing Gemstones through Quartz Irradiation

What gem is produced from irradiation of quartz containing traces of aluminum?

a) Jadeite
b) Cairngorm
c) Garnet
d) Amphibole
e) Chrysoberyl

Answer:

Cairngorm

Quartz that contains traces of aluminum can be irradiated to produce gemstones like cairngorm. Through the irradiation process, the quartz is exposed to specific types of radiation, which causes a color change in the gemstone. The morion variety of peaty quartz, for example, can be produced by irradiating any quartz.

When quartz is exposed to 0.5 to 1.5 mrd of ores 60, gamma, X-ray, or electron radiation, it typically turns a blackish or brownish color. However, the resulting color may not be uniform across the gemstone. It's important to note that irradiated smoky quartz does not pose any radiation risk to individuals handling the gemstones.

By irradiating a crystal, energy accumulates in the crystalline structure, altering its optical characteristics, especially its color. Gemstones created through this process have been prized for centuries and are highly sought after for use in jewelry and other ornamental purposes. If the gemstones are transparent, they can be cut and polished to create beautiful stones for various applications.