Novembr 16-18—COLUMBIA, SOUTH CAROLINA: Annual show; The Columbia, SC Gem and Mineral Society; Fri. 10-6, Sat. 10-6, Sun. 12-5
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 Post subject: Before and After – Post YOUR Transformation Pics
PostPosted: Mon Mar 23, 2009 11:43 am 
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Hi, Folks:

This can be a sister thread to “Off the dop…” But the emphasis is on how a stone changed.

Here’s an example.
Image This is a dark garnet (8.6 carats), which I mentioned in another thread. The white paper test shows it is well qualified for a sandpaper material.

Image This is an “after” pic (1.9 carats, 22% recovery).

Take care.
Mitch

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PostPosted: Mon Mar 23, 2009 4:25 pm 
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Nice shaped trillion,looks like it doesn't have a table,must have saved some weight there!
Image

Image

This one's been posted before but it's the only one I have a picture of the rough as well. 1.2ct Aqua,rough was 7 cts with a couple veils to cut out.

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PostPosted: Mon Mar 23, 2009 4:32 pm 
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Both of those are nice! Great idea ... it's good to see before and after to get an idea of what can be done :D

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PostPosted: Mon Mar 23, 2009 5:31 pm 
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Sort of before and after.

Image

Got the next bunch cut to start the process.


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PostPosted: Mon Mar 23, 2009 5:42 pm 
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That stone makes me feel so gay...er HAPPY! ;)

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PostPosted: Mon Mar 23, 2009 5:46 pm 
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brimsjewelry wrote:
That stone makes me feel so gay...er HAPPY! ;)

The idea came from a thread in Colored Stones that is in the first 10 listed at the moment...


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PostPosted: Mon Mar 23, 2009 6:34 pm 
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I'm only bi, and it make me feel gay too :-)

Wonderful stone.

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PostPosted: Mon Mar 23, 2009 9:48 pm 
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gsellis, what stones did you use for the layers? what kind of cut is that? I guess an opposed bar design would mix up the colors.


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PostPosted: Mon Mar 23, 2009 10:00 pm 
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rock lobstah wrote:
gsellis, what stones did you use for the layers? what kind of cut is that? I guess an opposed bar design would mix up the colors.

CZ - And the cut is just a basic rectangle.


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PostPosted: Sat Mar 28, 2009 12:07 pm 
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Hi, Folks:

I did an experiment. :?:
ImageThis tourmaline (3.95 carats) has a decent A/B color…
Image and an unfortunate-looking C color. The usual way to cut this type of rough is the opposed bar. I was curious what if the C axis is cut lower than the C.A (38 degrees).
ImageThis is the finished stone (1.3 carats, 32% recovery). This stone has an inverted pyramid pavilion and an opposed bar top. It is a rectangle so only the pavilion facets on the C axis are cut at lower than the C.A. A checkerboard top may work as well. :-k

Mitch

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 Post subject: parti saph
PostPosted: Sat Mar 28, 2009 4:55 pm 
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before, 2.45ct sapphire, very light on one side

Image

After, 1.25ct, 5.7mm round. there is still a lightly saturated section near one edge. not a great shot but realistic.

Image


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PostPosted: Sat Mar 28, 2009 6:39 pm 
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You can still see the light purple-ish bit, and the big window is closed, so I I still like it, and it's still cool with the bi-color. :)


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PostPosted: Sat Mar 28, 2009 6:55 pm 
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Oh man, this is a great thread. I am hoping a few of you others will post some rough to cut pics. very cool indeed.

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PostPosted: Sat Mar 28, 2009 7:47 pm 
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Quote:
I am hoping a few of you others will post some rough to cut pics.


Hey, I just remembered I do have some old photos of stones I had done where I had shot the rough first!
_______________________________________


Morganite. Rough was 30.2 Carats.
Image

Finished. Exactly 9 Carats. 29.8 % yield. :oops:

Image

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Last edited by Gearloose on Sat Mar 28, 2009 8:02 pm, edited 1 time in total.

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PostPosted: Sat Mar 28, 2009 8:01 pm 
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Zircon, 34 carats
Image

Finished and set: ~11 carats. Obviously this one is long gone.

Image

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