UV-Reactive Opal
Troy Ardon, April 30, 2014
The first documented UV-reactive chemical treatment to make opal appear tenebrescent.
Read More
Hydrophane Opal Treatment
Ratima Suthiyuth and Vararut Weeramonkhonlert, April 28, 2016
An opal rough is immersed in water and treated with oil and Opticon to observe effects on transparency and play-of-colour.
Read More
