Sungura
Brilliant_Rock
- Joined
- Mar 27, 2015
- Messages
- 585
Thank you for the fascinating information. I always wondered why they were still using cedar oil on their stones, when most high end emeralds are treated with Xcel or permasafe. Emerald dealers in the US prefer it to cedarwood, which dries up, leaves streaks, and has to be retreated every few years. I personally don’t care for it, but they seem like traditionalists. The Excel and permasafe are typically treated after cutting, unlike cedarwood, so cutting shouldn’t be an issue.
This is what an American emerald dealer told me when I sent him an emerald for evaluation. This info is ten years old though.
“Yes the modern fillers (Permasafe and ExCel) are significantly more stable than when your emeralds were purchased. They are even resilient to steaming and UV cleaners, not that I would test a $2000 emerald in there, lol. GIA did tests of emerald treatments and the new polymers faired 'no observed change' over time. High end stones are carrying the ExCel treatment typically in the present. However, the choice of treatment is always a personal one and cedarwood oil is the traditional choice taken by many.“
I didn’t get a chance to spend much time with Fabio, their treatment expert. Ricardo described something like a synthetic oil alternative to cedar wood that does not dry out. It was unclear to me if that is an oil or a resin. He didn’t seem too bothered by it. I believe part of George’s luxe branding is to sell untreated or insignificantly treated gems.
Come to Bogota with me next time @TL !