pocketful of \ud835\uded8tals
Aaron Celestian, PhD, Kriss LeftwichMinerals interact with everything — environments, living things, ancient oceans, other worlds. I'm a museum curator and scientist who writes about what those interactions reveal.
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The Receipt
For those who are just joining, there is a garnet in my lab that I have been staring at for longer than I’d like to admit. It sits in a small tray. The face of it reflects light in a way that no garnet should — metallic green, iridescent, t...
Death Is One Word For It
Tincalconite after borax. Photo by me, on display at NHMLA.
Two True Things
I watched it on a screen.
Julie Tolentino’s installation was already weeks into its transformation when we spoke — borax crystals she had grown onto the sculp...
Pegmatite No. 206
The Resurrection, 4,819 carats, imperial topaz. Carved by Konstantin Puzakov. Collection of Alex Grizenko, on loan to the Natural History Museum of Los Angeles County. Photo: Alex Grizenko.
Zhytomyr Oblast
In 1931, the Soviet state beg...
Something Chose This Garnet
I spent several weeks trying to figure out why a garnet would be green.
Not the crystal. The crystal, once you wipe the surface, is black. The green is on the outside — a film, nanometers thick in places, adhering to one population of gar...
Everywhere Except Here
Subnautica 2, Root Canyon biome, approximately 1,000 meters east-northeast of the starting lifepod. May 2026. The green mass is depicting troilite.
I was not expecting to stop.
Subnautica 2 had been out for only a few days. I was deep in...
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Authors
The writers behind this newsletter.
I'm Curator of Mineral Sciences at the Natural History Museum of Los Angeles. I study how minerals interact with environments and living things — and apply that to contamination, disease, and the search for life beyond Earth.
Collections Manager of Mineral Sciences at the Natural History Museum of Los Angeles County. Naturalist. Birder. Reader. Amateur seamstress.
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