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Opal var. Opal-CT (Lussatite) Paul Zerfass Coll.
- Les Rois Mine, Dallet, Puy-de-Dome, Auvergne-Rhone-Alpes, France
- Cabinet, 11.0 x 9.5 x 4.5 cm
- Start Time: 04/07/2019 6:45:00 pm (CDT)
- End Time: 04/11/2019 6:30:00 pm (CDT)
- Auction Closed
Item Description
Lussatite or opal-CT is an opal variety consisting of packed microscopic (150-300 nm) spheres made up of tiny microcrystalline blades of Cristobalite and/or Tridymite, with water content as high as 10 wt% (MINDAT). A striking sculptural 7.0 "flower" with a distinctive broad swirled rim is aesthetically set in the blocky large chalcedony matrix. Ghostly white fluorescence. Ex Paul Zerfass Collectin # 1368. Specimens of this size and quality are seldom on the market.