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  1. A friend of Tammy's has a chunk of amethyst crystals and was curious as to what the rusty orange highlights on the crystals might be caused by. I'm assuming it's some sort of iron oxide deposit leftover from when the amethyst crystals were created within the geode. I know that impurities of iron are responsible for turning the colorless quartz into a lovely purple amethyst. Has anybody else seen these rusty highlights in their amethyst specimens? Cheers. -Ken '
  2. MegHubbs

    Rock Identification Help!

    Found this while hiking in texas, unsure of what it is! It flakes relatively easily, shiny when light is shined on it, and it is a white color IMG_9663.mov
  3. New here, love fossils. My collection in attached images. Coral and others I can not identify. Beautiful pieces.
  4. Hello ! I bought this at a Flea Market in California years ago for a dollar. It was in a box of rocks and Geodes. I recently got a rock ID App & this one keeps returning as Opal. It’s got a good weight to it so I figured it’s a Geode. But I once saw a fossilized egg that had the same odd Conical edge to it & now I’m wondering if it’s an egg of some sort. The exterior has an interesting texture to it. The inside of the exterior has golden bits that look like Amber almost. Is there such a thing as Fossilized Egg Whites? Thanks for any info . Gratitude, FrankB
  5. Bahagma

    Crazy Looking Rock

    I have had this for years and honestly don't remember where it came from. It has crystals all through out it and has some weight to it. Any idea what it is?
  6. sclives

    Please Help

    Hello I am new to the is hobby and need some help identifying this natural Formation. After a thorough inspection I can't help but wondering if this is some kind of crystalized skull/Head. Looking at the nose area I can see were the small holes go into the sinus area. Note the back looks to be severed and you can see the brain area, not to mention the deep set eye sockets you can see on one side the ear formation. I know this sounds bizarre but seeing is believing can anyone see what I'm seeing and please help with any thoughts. Thank you.
  7. Jlark18

    Conglomerate Beach Fossil

    I found this fossil a few years ago along the Orange County, CA coastline. It was already partially smooth when found but I polished it a bit. Looks to be some shell fragments, possibly clams or oysters, mixed with silica and other local material.The colors are beautiful. Any thoughts on what the fossils may be? measures 7” x 5” x 3” and weighs roughly 5lb. Thank you!
  8. Check this out its unbelievable fish trapped in amethyst geode outer shell formed of insects
  9. Collector9658

    Composita brachiopod with calcite brachidium

    From the album: Pennsylvanian fossils

    Phylum: Brachiopoda-Articulata Class: Rhynchonellata Order: Athyridida Family: Athyrididae Genus: Composita Species: Composita subtilita
  10. I'm really not sure what this is, if anything. Any ideas?
  11. Collector9658

    Backlit crystallized Composita brachiopod

    From the album: Pennsylvanian fossils

    Phylum: Brachiopoda-Articulata Class: Rhynchonellata Order: Athyridida Family: Athyrididae Genus: Composita Species: Composita sp.
  12. bay

    Fossil/Gem?

    Going through a family member's old stuff and found this along with a few other dinosaur bones. They grew up in San Juan county Utah, so this was likely uncovered from that region, but I can't say with absolute certainty. I don't know if this is a fossil or just a geode. I myself have almost no experience in this area. Any help appreciated. Thank you!
  13. Blubby the blobfish

    Snake vertebrae on interesting matrix

    I have this really interesting piece in my collection. Got it for what seems like a steal. Its a tiny coil of snake vertebrae but the matrix seems to be some sort of crystal. Has anyone seen anything like this? No similar images come up when searching for snake vertebrae.
  14. This is a tusk I prepped a few years ago, sourced from central Alaska. It was in great shape for being a partial, no breaks to repair or even major cracks to fill, all natural besides a little stabilization and polishing to bring out the colors. Really strong vivianite on this one and inside the internal cavity appears to be crystals. It was tricky to get a good photo of them, but see below. I took a few of the inside shots with a UV flashlight as well as just a flash. Vivianite crystals?
  15. Leoni86

    Stone found with crystal swirl

    Any information on this rock I’ve found at my local beach.. the swirl is full of crystals
  16. Hi everyone this is Matt again. Can you make jewelry out of polished crinoid stem fossils? Like this one in the photo:
  17. turtlefoot

    Crystalized fossil or a pipe dream?

    I have a rock feature that I am a bit doubtful, but hopeful about. I have a few "crystalized" fossils and have seen some very nice ones from near my hunting area also posted. This does mean that there are some out there. This little feature measures almost 11mm long and is 6mm wide. In hand, the left side really looks like a head segment of some sort with the line and what does look like two eye spots. The main area has what looks like segment end features going around the sides. The square crystal feature in the center is a totally new one for me. I have found literally hundreds, if not thousands of crystal specimens (mostly in the quartz family) and have never seen anything like this. This rock has several other fossil and fossil imprints in it. There are cephlapod fossils, rugose coral fossils, and other features that I am still researching. Researching and using the state geological map, it was found in a late ordovician period area. It was found outside of Willow Springs, Missouri, USA. My hopes are that it is a trilobite fossil of some sort or an isopod fossil. I am NOT getting my hopes up real high though.
  18. Not my find but noticed this one on Reddit. What do you think. Seems to be too much coincidence. My best guess a real skull covered in some deposits either marine or cave in origin.
  19. Found along the shore of the North Channel at Little Current, Ontario. Large, bumpy nodule which seems to be completely formed of (calcite?) crystals all the way through (I'm surprised by the multiple colours, but maybe that's normal?). I'm assuming it's a sponge, though wondering if someone could give a more specific ID or perhaps explain the crystallization seen here.
  20. Hello. I offer for trade fragments of petrified wood of the Carboniferous period with crystals of smoky quartz. Some samples are in the photographs (I did not upload all the samples I have, since there are quite a few of them - of different sizes and qualities, as well as the sizes of the crystals themselves. I think we can agree on what specifically interests you - I have no doubt that I will find the sample you need). The origin of this wood is Ukraine, its age is Carbon. I'm interested in marine reptiles and petrified wood. Thank you. Have a nice day
  21. Sally Rose

    Wood or Bone in Costa Rica

    I found this fossil on our property in Puriscal, Costa Rica. I found it on the ground after moving some dirt from the berm next to a ditch. This ditch was dug by hand for us several years ago. The previous owner backhoed this area to flatten it. but couldn't go any farther due to the enormous rock. I am posting here because I want opinions if this is petrified wood, or bone. It measures about 10cm long, diameter about 8cm. There is a crystal formation on one end.
  22. Lone Hunter

    Woodbine mystery

    Went out to Grapevine lake to check out the water level after all the rains, I rarely bring back anything, there's only oysters and gastropods by the dam and I couldn't get that close. This rock caught my eye, looked like it might have something in it. It wasn't until I got home and looked at it with loop that I saw the crystals, really hesitate to use that word because I've never seen any kind of crystalization in this part of woodbine. As far as I know no kind of fish fossils are here but that's my only thought, something fishy like fins. Most of them have an opalescent shine that's hard to photograph, and it does look like something is inside. I don't know what to make of it but hoping someone does. Close ups are of the smaller circle. Thanks for looking!
  23. RebMc74

    Star Crinoid Stem

    I found this in the parking lot of gravel at a power plant I worked at in Taylor, Az. Thinking it was a dried up carrot, lol. I kicked it and realized it was a bit hard to be a carrot, I picked it up and noticed a crystal through the center. I've searched and still can not find one so vivid in color and absolutely none so far with a crystal through the center. Can anyone tell more about this and how rare it is with the crystal in it.
  24. reinecke_tracy

    Crystallized sponge?

    Found this on a walk. Very porous with channels filled with tiny crystal
  25. Hi everyone, this is Matt again. Does anyone know what these things in this rock I found are called ? Here are some photos:
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