#peanutobsidian

[laurajanebouton]

The best thing about today is I am all done with taxes, yeah!!! Just have to hand them over to my accountant and hope for the best. I also finished this beauty. Shop update coming next week😀#ljbjewelry #metalsmith #artisanjewelry #artjewelry #fashionaccsessories #handmadejewelry #riojeweler #instajewelry #etsymetal #etsymetalteam #etsyseller #capecodjeweler #instasmithy #silversmith #onmybench #womansjewelry #womansfashion #sterlingsilverjewelry #bling #metalwork #wearableart #handfabricatedjewelry #oneofakindjewelry #bracelets #peanutobsidian

[fibonaccilapidary]

Couple more cabs in progress! This is a very rare material called peanut obsidian. Although it's is very tricky to work it. A few minor pits and surface fractures might be visible as most of this materials are. They are all waiting for final polish. Cabs coming soon! #peanutobsidian #lapidary #cabochon #minerals #cabsforsale #rocks #cabsale #instasale #silversmith #rockhound #cabochons #gemstones #slabs #jewelry #sale #turquoise #ladysmith #crystals #lapidaryheaven #cabs4sale #cabochonsale #lapidarysale #geologyrocks #lapidaryrough #kingmanturquoise #rocksale #lapidaryist #lapidarywork #slabsforsale #fibonacciLapidary https://www.instagram.com/p/BoGXkriAIWu/?utm_source=ig_tumblr_share&igshid=1tiyt3a53x5bu

[angryturtlegems]

A couple closeups of a sample of peanut obsidian. I hadn't seen this material before, but a friend sent me a bit to look at. It looks like a red snowflake obsidian at first glance but closer inspection shows it is a bit more unique. As you can see in the photos the 'obsidian' portions have a complex twxture that indicates a (partial?) conversion to perlite, or hydrated obsidian. The spherules are a mix of oligoclase feldspar and cristobalite with later chalcedony filling the cracks. There is a great paper from '68 about this material by Paul L Broughton which goes into great detail and I would highly recommend reading it. #obsidian #peanutobsidian #gems #minerals #geology #spherules #microscope