Page 2 of 2
Re: Ethiopian opal of Welo, Shewa and Gondar
Posted: Tue Feb 23, 2016 12:53 pm
by OpalSpectrum
PinkDiamond wrote:It looks to me like the first shot of it is dry, and the second one is in humid conditions. Did you get your labels on the pics wrong?
Iskandarman wrote:Opaque when dry, transparent after soaked in water
- transparent crystal welo will change after soaking in water and after drying it will change into 'crystal' again
- opaque hydrophane will change into crystal and back to opaque when dry ...so the effects are opposite
Re: Ethiopian opal of Welo, Shewa and Gondar
Posted: Tue Feb 23, 2016 3:41 pm
by kjsspot
Yes, when it's soaking it often goes clear. And then when it dries out it becomes cloudy. THEN, after REALLY drying, sometimes it stays cloudy and sometimes it returns to the original color.
Re: Ethiopian opal of Welo, Shewa and Gondar
Posted: Tue Feb 23, 2016 10:00 pm
by Iskandarman
new knowledge i got today, When Welo opal absorbs water...
1. Crystal opal ---> Opaque (hydrophane)
2. Opaque opal ---> Crystal opal (inverse hydrophane most welo..)
does Shewa and the less common Gondar opal acts the same as Welo too?