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Spollydolly
 #21 
Just received Sea sediment Jasper heart...pretty. Feels like a rock but too many straight angles in inclusions. Looks like a man made conglommerate to me. Very pretty though!
Check out this link of "fakes" and misnomers.
https://tumblr.com/liked/by/spollydolly
(Screen shor below and my heart)
Do you have a pic of your "real thing"...the one you saw in the rough? Guess you just make up big chunks of it and then slice and cut n polish. Looks nothing resembling Mooakite.
Spollydolly
 #22 
Bah! Wont let me send pics too big file.
Kimberly McNeice
 #23 
I bought some of the "jasper sea sediment " although I think it quite colorful and pretty it's not real. It feels like resin. So I used a file on it and it is extremely soft so I would say it's some sort of pieces of dyed stone in a resin with metals added. Idk. Educated guess.
Beadman
 #24 
I have read the above dialogue, having found this site in a Google search on "sea sediment jasper."  In recent days I've been buying a lot of stone beads and pendants at eBay, mostly from China, but also India.  I have avoided the "sea sediment jasper" because I have assumed it is some sort of artificially-colored conglomerate.  My search was an attempt to seek confirmation.  I too would like to know the details of coloring this or any stone, as well as what is being used to "cement" the conglomerate pieces together.  (I would guess Epoxy, or something similar—but who knows what the Chinese may be doing.)  THAT is the making of a very long dialogue.

I noticed, as often happens, that artificially-colored stones are often referred to as being "dyed."  And, certainly, many stones ARE dyed.

However there is an entire class of coloring that relies on dissolved mineral baths, and heating, burning, or subjection to acid.  This is VERY DIFFERENT from dying stones.  Mainly because dyes are organic compounds, and they are, at best, temporary.  They fade from washing, solvents, and even just direct sunshine.  In contrast, the mineral-enriched stones receive a permanent color that mimics nature, in depositing mineral oxides into the lattice of the stone (usually chalcedony or agate).

This method was brought to a science at Idar-Oberstein, Germany, and has been practiced for at least about 200 years.  The original techniques were used thousands of years ago.  (This history is one of my specialties.)  The method is sometimes characterized as "beizen" (pronounced "BITE-zen"—and referring to any crafts or processes where something is soaked in an acid.)  For instance, an animal skin is beizen when it's made into leather.  A cucumber becomes beizen when it's made into a pickle.

Various solutions or oxides are used to make specific colors.  Brown and black are the simplest and derive from sugar (carbon), and only require soaking in a water solution and heating (or burning).  Red (carnelian) comes from dissolved nails (iron), etc., etc.  This has been practiced since antiquity, while colors such as yellow, green, and blue may have been devised relatively recently at Idar.

The point I want to make is that these permanently-colored stones, that derive from science and technology, are routinely characterized as being "dyed"—when this is not an accurate proposition.  Dyed stones are not permanent, and are inherently cheap and inferior.  Also, many people do not understand that carnelian, sard, and "black onyx" have been manufactured for thousands of years.  These are routinely believed to be "natural," when this is most-often not the case (particularly beads and ornaments from India in antiquity, and from the commercial or "costume jewelry" industries of Europe throughout the previous 200 years).

From 1881, the Germans were importing agate for beizen treatments from Brazil—and in the 1980s manufacturers in Brazil (apparently) learned the beizen techniques.  The Chinese learned to make beizen agates/chalcedonies in the 1990s.  (Prior to then I suppose they mostly got their commercial carnelian from Germany.)  In the past 15+ years, the Chinese have gone crazy, developing techniques to color stones (using both dying and beizen techniques—sometimes together.  Plus they have a retinue of techniques to change the structure of the stone to make crackles and textures—and particularly the "dragon vein" pattern that is essentially dyed crackles. The colors most-often dyed now are pink, lavender, and purple.  Possibly others, but beizen processes are more likely for red, yellow, green, and blue—and the simple brown/black colors.

On top of all this fiddling with stones that is NOT admitted, these are routined described as "natural"—which they surely are not (if that is taken to mean "untreated" and the like).  And then there is the misidentification of stones, in which one mineral is ID'd as another, or given some new fake name.  Figuring out all these variables has become very complicated—if you care.

Some of you may not care whether a stone is beizen or dyed, because if it's messed-with at all, you lose interest—and who cares how it's done.  Yet, as I said, beizen stones have been presumed to be "natural" for a very long time—particularly carnelian and several agate or chalcedony types such as "black onyx."

OK—I suppose this is a long-enough first post here.  I hope some of you find this interesting and helpful.  Beadman
Beadman
 #25 
Here's an image I harvested from a book by Dake et al, showing the artificial coloring of Brazilian agate.  A polished nodule was sawn into slices, and the individual pieces were given to companies that specialized in a particular beizen color.  The left piece is untreated, and shows the natural translucent banded gray color.  Note also structural white layers that do not accept the mineral colorants, and likewise the crystalline quartz areas.  Only the microcrystalline material absorbs the elemental baths, throughout.

The next piece is carnelian (iron), followed by brown (sugar/carbon), blue (cyanide), yellow (?), and green (chromium).  The right piece was actually dyed bright plum-purple—which would have been temporary; but no known mineral bath created any similar color.  So, as now, pinks and purples were and are dyed. 




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