Turritella agate rough slab, 24x41x5.5 mm, natural, Elimia tenera snails (rs71492)
Turritella agate rough slab
Origin: Wyoming or Colorado
Despite its name, “Turritella agate” is not made of fossil snails of the genus Turritella but the name has persisted for a long time. The snails are actually properly referred to as Elimia tenera, in the family Pleuroceridae.
Elimia agate comes from the Green River Formation in Southwestern Wyoming, Northeastern Utah, and Northwestern Colorado, found in layers deposited in a series of ancient lakes, in the early and middle parts of the Eocene Epoch, between around 53 and 42 million years ago.
This example is a very gemmy dense chalcedony, it doesn't contain the pits and fractures found in a lot of this agate.
Approx size : 24 x 41 x 5.5 mm, Weight: 14g (69.5 ct).
First 2 pictures taken wet to bring out colors you may see after polishing. Remaining pictures taken dry to show imperfections if any. If it's transparent one picture is taken with backlighting. I use a full spectrum 45 w light bulb - photography photo CFL 5500K. It is a daylight balanced pure white light.
Slab was preformed by shaping the slab and sanding the front and back with 320 diamond grit, this should make it easier to cab.
I use a 24 mm coin and 10 mm squares in my pictures to help with image sizing.
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