Chrome Chalcedony: shaped & prefinished lapidary slab, all natural, translucent, mirror finish, venting pits, beautiful green (25266)

I prefinished this slab by removing ugly pits and fractures and trimmed away anything that didn't look good. I shaped it and gave it a final 1200 diamond grit sanded smooth finish. Based on their physical makeup some end up with a really nice shine, sometimes like a mirror. If I have to leave anything in, like pits or fractures, I will mention them in the below description. This slab is ready for jewelry or collections.

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SLAB DISCRIPTION:

RARE CHROME CHALCEDONY from Australia. I shaped and prefinished it to a smooth finish, you can see several pits from venting, it has a beautiful mirror finish with 1200 diamond grit, the back is flat and the front slightly rounded.  The green Chalcedony is a beautiful emerald green. The slab does have inclusions, I don't know what to come them. This slab will make gorgeous jewelry or keep as a collectable specimen. Show it off with the included plastic stand.

Approx size: 34 x 34 x 32 x 4 mm, Weight: 30.5 ct

Chrome chalcedony occurs in a number of places in Western Australia. The piece displayed below came from near the town of Newman which is approximately 700 miles north of the capital, Perth.  Because this is a silicified cap rock and only found on the surface it's extremely rare.

The geological setting of the area is that of an ultramafic intrusion into granite-greenstone of Archaean age.  The intrusion consists of serpentinite that has also produced chrysoprase, chalcedony & common opal. These rock types along with the chrome chalcedony occur in the weathered , silicified cap rock. It's believed that original weathered serpentinite has been replaced through processes of silica deposition and the chrome chalcedony represents a whole-rock replacement or pseudomorph.


INFO ON SLABS
Use my pictures with the 10 x 10 mm background squares and the 18 mm dime to help with size visualization.

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