@AC I’m sorry to be late to the party. Thank you @Ziacat for providing the information. 
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Thanks to all for sharing so many gorgeous stones! I will be someone to refer to this thread in the future as my knowledge is very limited.
I have a Nakai ring which I think has pink sugilite. If I’m wrong, do let me know!
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I too love ammolite @chamekke! I didn’t know about it until a trip to New Brunswick and Nova Scotia where I discovered an artist, Diana Morrissey. She had acouple one of a kind pieces using ammolite, I bought this ammolite pendant along with a ring and some earrings Thanks for bringing this up, it’s a gorgeous stone… deep red/orange, with hints of greens from certain angles.
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@Ziacat…a mystery is the best way to describe it! It’s my understanding that chalcosiderite and turquoise can occur together; they’re pretty much the same composition except chalcosiderite replaces the aluminum in turquoise with iron…thus more green. It occurs in several Nevada mines, especially the Demale mine and in Lander county (new Lander). I’ve read that much of what we call Nevada Variscite is actually chalcosiderite. Evidently, in most cases it takes chemical analysis to determine if it is actually chalcosiderite.
I find this stuff interesting, but I’m still going to call Demale and New Lander “Turquoise”
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@Islandmomma - another heavy sterling amethyst cuff by Edith Kee. Love your beads!
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Interesting info on ammolite.
Ammolite is an opal-like organic gemstone found primarily along the eastern slopes of the Rocky Mountains of North America. It is made of the fossilized shells of ammonites.
Here is part of my Ammonite collection. One never knows what the inside will look like until they are sliced.
This one has golden quartz.
Orange jasper like material and quartz crystals.
The left one has lots of flash. It is hard to show up in photos.
Sometimes there is pyrite.
Lower right has a combo of quartz and pyrite. Upper right is yellow quartz.
An unusual one. Most of the inner structure is broken into fragments.
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What a lovely amethyst cuff! I need to wear mine more often. I think about what I have planned before I wear that set because I don’t want to hit/chip the beads. I got the cuff from a nice seller on Etsy and she told me that the cuff was in the front window as a display at her former brick and mortar store. A couple weeks after I bought the cuff she messaged me saying that she had received some very nice AAAA amethyst beads and asking if I would like to have a necklace made. We talked and I ended up having two done. They were to commemorate my late cousin/best friend/sister who passed 13 years ago. It was her birthstone. I usually buy a gift on her birthday each year but that was by far the most extravagant one. Thanks for your kind words.
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Ammolites are intriguing and I really enjoy seeing all of the different looks. Yours are great.
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Thanks. I was going to make earrings from some, but they are so nice on their own.
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Yes, I would say Ammonite. Nautilus shells are the same family. Call them cousins.
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Fabulous purple spiney oyster beads @Xtina! My Spiny Oyster is all the deeper orange, and all Kewa made:
The inside tab necklace is by Ray Lovato (2004).
The middle 4 strand necklace with turquoise and jet is by Colandra Tenorio (2014).
The outside 2 strand rounded bead necklace with a few dark lapis beads is by Robert Lewis Tenorio (2010)
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Those are so beautiful @Bmpdvm. I’ve been thinking I wouldn’t mind another longish Kewa necklace. Maybe that’s something for me to to save for at the upcoming Eiteljorg Market 
Tag said Red Creek Jasper (a ring)
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Nice! I would have never thought that was jasper…it almost has an opalescent quality.
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The light may have made it look a little bit that way. I knew it was Jasper, I just couldn’t remember what kind, so I dug out the receipt. It’s not a Native made ring. Years ago I bought a number of items from this artist, Charles Albert. But several of the stones became loose, (I even lost one) so I haven’t bought more.
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Beautiful. Jasper is such an overlooked stone. There are so many amazing varieties.
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@Bmpdvm , that is a gorgeous pendant! I love how the artist set the ammolite piece into textured silver and added that little round cab. So beautiful.
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@fernwood , I love your ammonite collection! I have a few pieces too although nothing as dazzling as yours. I hadn’t seen one with gold quartz before – that’s particularly striking IMO.
And I think you caught the red flash fairly well. It’s elusive for sure, but that looks to be a really lovely piece that doesn’t just put a toe across the border into Ammolite-land but ventures boldly with most of the torso!
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I love the milky opalescence of this piece, @Ziacat ! At first glance I wondered if it was labradorite.
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Very nice collection of spiny oyster beads and tabs. 
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