ShopDreamUp AI ArtDreamUp
Deviation Actions
Suggested Deviants
Suggested Collections
You Might Like…
Featured in Groups
Description
Ammonite half in 14K gold fill.
2 1/18" by just over 1 1/4" wide.
Picked this guy up at the mineral show this weekend, anyone know where it's from or why the different coloring and crystalization than the brown/grey I've seen most commonly? I've seen plenty of shades of brown varients but never anything this pale or with those almost hairlike crystals in the chambers.
Sold, though it has cousins on my etsy shop [link]
(I'd still like to know why the drastic color difference and crystal shape, and where I can get more, if anyone knows the answer to any or all of those questions!)
2 1/18" by just over 1 1/4" wide.
Picked this guy up at the mineral show this weekend, anyone know where it's from or why the different coloring and crystalization than the brown/grey I've seen most commonly? I've seen plenty of shades of brown varients but never anything this pale or with those almost hairlike crystals in the chambers.
Sold, though it has cousins on my etsy shop [link]
(I'd still like to know why the drastic color difference and crystal shape, and where I can get more, if anyone knows the answer to any or all of those questions!)
Image size
1707x1707px 2.95 MB
© 2012 - 2024 magpiesmiscellany
Comments48
Join the community to add your comment. Already a deviant? Log In
Hm, I can only theorize, but I guess the crystals come from a faster cooling of the silicic acid.
In other ammonites the crystals are larger and fill out the entire shell. They are so large that you can see they are mostly clear or stained brown.
When the silicic acid cools down faster, it can't make large crystals, but only small ones. They will refract the light in a way that they seem not clear but white.
And obviously the petrification process was over quite soon with no more silicic acid diffusing into the shell. That, which was already in, crystallized (reducing its volume by that, so that there are holes left) and then nothing more came.
In other ammonites the crystals are larger and fill out the entire shell. They are so large that you can see they are mostly clear or stained brown.
When the silicic acid cools down faster, it can't make large crystals, but only small ones. They will refract the light in a way that they seem not clear but white.
And obviously the petrification process was over quite soon with no more silicic acid diffusing into the shell. That, which was already in, crystallized (reducing its volume by that, so that there are holes left) and then nothing more came.