oil treatment
-
Apatite Oiling | Before and After
Oil treatment has a significant impact on the appearance of an apatite.
-
Oiled Gems Lab Alert • Lotus Gemology
Lotus Gemology warns that oiled rubies, sapphires and spinels are entering the Bangkok wholesale market in increasing numbers. Most, but not all, of these gems are originating from Burma.
-
Oiled Spinel & Tanzanite | Shocking Revelations
When a red spinel and a tanzanite were submitted for testing, oil was found in the fissures. Removal of the oil resulted in a startling deterioration in clarity.