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Post by stephan on Oct 15, 2020 9:44:14 GMT -5
Here are some bone cabs I've cut: Dino:  IMG_8702_Gembone test cab by Stephan T., on Flickr  IMG_5847_Dino bone "guitar pick" by Stephan T., on Flickr  IMG_3937_Dinosaur bone "tongue" pendant by Stephan T., on Flickr  Dino gembone shield pendant by Stephan T., on Flickr  IMG_4249_First cab from gembone slab #1, necklace by Stephan T., on Flickr  Dino bone shield by Stephan T., on Flickr  Dino bone "fang" view 2 by Stephan T., on Flickr I just finished this one off. I found it partially completed in an estate collection:  DSC_1429_Dino bone cabochon by Stephan T., on Flickr Whale:  IMG_8549_Well-agatized whale-bone teardrop cabochon by Stephan T., on Flickr  IMG_6155_Agatized whalebone freeform cabochon by Stephan T., on Flickr  DSC_0458_Whale bone by Stephan T., on Flickr  |
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Post by rockjunquie on Oct 15, 2020 10:26:55 GMT -5
That's a really great assortment!
Here's a few of my favs. The first one I bought with a crappy cut and recut it. I have never been able to get picture to do the color right. It's a beautiful cherry red. Very intense. The rest are some I did that I especially like.
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Post by rockjunquie on Oct 15, 2020 11:15:04 GMT -5
Nice cabs! I’d like to cut more bone, but the stuff is expensive. Here’s a cab of gem bone with hematite, one of the first cabs I cut.  Nice! Yeah, not only is it expensive, it's hard to find the really good stuff. |
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Post by mohs on Oct 15, 2020 11:27:11 GMT -5
lavendersaur !
yummy
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Post by stephan on Oct 15, 2020 11:41:09 GMT -5
rockjunquie: those are some beautiful cabs. The re-cut is wonderful. @jadedvision: bone with hematite. That's unique and pretty cool. I've never seen that before. Another material with endless variety, it seems.
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Post by stephan on Oct 15, 2020 11:45:41 GMT -5
Nice cabs! I’d like to cut more bone, but the stuff is expensive. Here’s a cab of gem bone with hematite, one of the first cabs I cut. Nice! Yeah, not only is it expensive, it's hard to find the really good stuff. Truer words were never spoken. I have a bunch of better than mediocre, but definitely not primo material that I probably overpaid for when I was a rookie. Beautiful agate, but crumbly matrix. Undercuts even when stabilized, like the two from last weekend. Oh well, when you do an art show, all you need is for a paleontologist to show up. Had that happen once, and she snapped up all my dino bone/coprolite cabs. Only had four or five at that time. Boy was I kicking myself for leaving the other ones at home. |
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Post by miket on Oct 15, 2020 12:58:53 GMT -5
What the heck, it wasn't that long ago but I'll throw mine in...  |
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gemfeller
Cave Dweller 
Member since June 2011
Posts: 4,063 
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Post by gemfeller on Oct 15, 2020 13:23:03 GMT -5
This is one of the most unusual dino bone colors I've cut. I really like the blue/green with very nice cell structure. I have no idea how to value it. I have enough left for one more cab I think. Blue/Green Dino  I have quite a bit more bone to cut. This is one I've considered recutting to emphasize the sharp reds but every time I inspect it for the recut I decide against it because in hand it's really nice. It just doesn't perform well for the camera.  |
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Post by stephan on Oct 15, 2020 14:41:37 GMT -5
What the heck, it wasn't that long ago but I'll throw mine in... Definitely worthwhile additions. Thanks for adding them. |
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Post by stephan on Oct 15, 2020 14:44:19 GMT -5
This is one of the most unusual dino bone colors I've cut. I really like the blue/green with very nice cell structure. I have no idea how to value it. I have enough left for one more cab I think. Blue/Green Dino I have quite a bit more bone to cut. This is one I've considered recutting to emphasize the sharp reds but every time I inspect it for the recut I decide against it because in hand it's really nice. It just doesn't perform well for the camera. Any idea what is filling the cells on the first one? Some sort of copper mineral? Very cool. I'm pretty sure the sale price should be $100,000,000,000....  I have a couple of pieces, also, where I just can't get pictures that does them justice. |
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gemfeller
Cave Dweller
Member since June 2011
Posts: 4,063
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Post by gemfeller on Oct 15, 2020 15:31:25 GMT -5
stephan , no idea on the chemistry of the cell structure. One thing that always fascinates me is the huge palette of colors found in dino gembone. I've wondered just what process caused such a rainbow, realizing of course that mineral impurities in the silicious feedstock are the chromophores. But since the fossils are usually found in similar deposits I'm a little puzzled. As for your valuation of the stone, I'm in full agreement and will get it listed for that amount ASAP.
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Post by stephan on Oct 15, 2020 16:08:16 GMT -5
stephan , no idea on the chemistry of the cell structure. One thing that always fascinates me is the huge palette of colors found in dino gembone. I've wondered just what process caused such a rainbow, realizing of course that mineral impurities in the silicious feedstock are the chromophores. But since the fossils are usually found in similar deposits I'm a little puzzled. As for your valuation of the stone, I'm in full agreement and will get it listed for that amount ASAP. Yes, I've wondered that, also, with agates in general. T-eggs, for example, also often show a multitude of colors in the same specimen. I know that some minerals, such as iron, can appear in many different colors, depending on oxidation state (Fe 2+ vs Fe 3+), as well as what the counterion(s) are. But that still doesn't fully explain it. Why would one iron salt stain one cell, and a different one another. Is it self-affinity? Different ones filling at different times? Probably more complex than either of those. This is why, to me, dyed agates will never match nature's paintbrush.  . |
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gemfeller
Cave Dweller
Member since June 2011
Posts: 4,063
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Post by gemfeller on Oct 15, 2020 16:20:39 GMT -5
stephan, "This is why, to me, dyed agates will never match nature's paintbrush." I could not agree more. My enjoyment of stones is directly related to astonishment at the amazing handiworks of nature. It's the old "art imitating nature" conundrum. I may not be able to tell much but I'll put the bone under the spectroscope when I get a chance to see if i get a cu line. I lack a reliable light source so that's a problem.
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Post by mohs on Oct 15, 2020 16:36:40 GMT -5
dinohardtsaurs  don’t know much about the stones maybe someone can proffer some suggestions... |
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Post by stephan on Oct 15, 2020 16:53:32 GMT -5
dinohardtsaurs  don’t know much about the stones maybe someone can proffer some suggestions... Sweet! |
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Post by rockjunquie on Oct 15, 2020 16:56:50 GMT -5
dinohardtsaurs don’t know much about the stones maybe someone can proffer some suggestions... Nice! |
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Post by parfive on Oct 15, 2020 17:04:02 GMT -5
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Post by rockpickerforever on Oct 15, 2020 17:53:53 GMT -5
dinohardtsaurs That is so sweet, I can "heartly" stand it! (groan, terrible pun  ) |
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Post by mohs on Oct 15, 2020 19:00:39 GMT -5
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Post by jasoninsd on Oct 15, 2020 20:00:22 GMT -5
stephan - They're all great. I really like the "tongue" and the whale bone cabs are very striking! rockjunquie - Tela, amazing as always! Love love love the lavender! @jadedvision - That gem bone with the hematite is stellar! Wow! Quick glance at it and I see butterflies! miket - Lovin' those wraps! Your pieces were some of the first dino bone to which I paid attention. So, your fault I like this stuff so much!  gemfeller - That is one of the most stunning pieces I've seen in dino bone! Outrageously gorgeous colors! Trust your gut on the red one! mohs - I don't have a bone to pick with you!!! That's one of my favorite hearts! 
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