CIBJO releases Gemmological Special Report: considers process of separating measurable facts from opinion; See Gemological Articles below.
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 Post subject: Re: Before and After – Post YOUR Transformation Pics
PostPosted: Sun Mar 29, 2015 10:28 am 
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During:
Image

and after:
Image

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 Post subject: Re: Before and After – Post YOUR Transformation Pics
PostPosted: Sun Mar 29, 2015 10:29 am 
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Before (morganite):
Image

and after (Hanami)
Image

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Last edited by bobsiv on Mon Mar 30, 2015 8:02 am, edited 1 time in total.

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 Post subject: Re: Before and After – Post YOUR Transformation Pics
PostPosted: Sun Mar 29, 2015 11:19 am 
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Hi Bob

Your opal looks awesome! =D>
And a beautiful cherry blossom morganite - good choice of stone for the design! :D

Martine


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 Post subject: Re: Before and After – Post YOUR Transformation Pics
PostPosted: Sun Mar 29, 2015 8:33 pm 
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I love the morganite!!! :D


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 Post subject: Re: Before and After – Post YOUR Transformation Pics
PostPosted: Mon Mar 30, 2015 4:23 pm 
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Bob - what grit did you use for the frosted facets? It looks fantastic!

Thanks!

-Allan

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 Post subject: Re: Before and After – Post YOUR Transformation Pics
PostPosted: Tue Mar 31, 2015 7:52 am 
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Before and after of an orange Sri Lankan Sapphire.
Started as an 8.06ct, and finished out at 6.24ct with a
step-cut crown and a radiant-style pavilion. 10.45 x 8.70 x 7.0mm.
Report from AGL that it is heat only - no beryllium.
Image
Image
Image

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 Post subject: Re: Before and After – Post YOUR Transformation Pics
PostPosted: Tue Mar 31, 2015 2:58 pm 
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Great looking re-cut Roger. Nice color and size too,


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 Post subject: Re: Before and After – Post YOUR Transformation Pics
PostPosted: Tue Mar 31, 2015 4:06 pm 
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Thanks Alan, I used a 600 grit wheel. It was a small stone (5.5 mm). I like to polish the whole stone then add in the frosted facets by rubbing the stone on the stationary lap.

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 Post subject: Re: Before and After – Post YOUR Transformation Pics
PostPosted: Sat Apr 11, 2015 8:05 pm 
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Dichroic Oregon sunstone

Before
Image

After, 1.52 carats
Image

It's less blue in person, I think I was picking up some extra blue from the sky's reflection (finally blue skies!). It's a nice teal with peach on opposing corners.

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 Post subject: Re: Before and After – Post YOUR Transformation Pics
PostPosted: Sat Apr 11, 2015 8:54 pm 
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Absolutely beautiful sunstone, there!


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 Post subject: Re: Before and After – Post YOUR Transformation Pics
PostPosted: Sat Apr 11, 2015 10:31 pm 
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Which was the weight before the cutting?


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 Post subject: Re: Before and After – Post YOUR Transformation Pics
PostPosted: Sat Apr 11, 2015 11:32 pm 
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Quote:
Dichroic Oregon sunstone

Gorgeous result! How did you orient the rough? I have a bunch of dichroic green/red but have no idea how to orient to avoid getting muddy colour as a result.

-Allan

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 Post subject: Re: Before and After – Post YOUR Transformation Pics
PostPosted: Sun Apr 12, 2015 4:05 pm 
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I just tried to cut for the brightest green. It's a little muddy in person, the close up picture makes the colors look more distinct. I think I'd have had to cut it like a closed-c tourmaline to get rid of the red better.

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 Post subject: Re: Before and After – Post YOUR Transformation Pics
PostPosted: Fri Oct 16, 2015 6:36 am 
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Just completed a more interesting custom cutting job than the usual repairs...
Namibian tourmaline, 65.91 ct rough to 21.90 ct barion pear (based on Jeff Graham's original design), 33% recovery but not entirely flawless (with bonus dust spots).


Attachments:
Tourmaline 65.91 ct compressed.JPG
Tourmaline 65.91 ct compressed.JPG [ 68.08 KiB | Viewed 1529 times ]
Tourmaline 21.90 ct compressed.jpg
Tourmaline 21.90 ct compressed.jpg [ 127.93 KiB | Viewed 1529 times ]
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 Post subject: Re: Before and After – Post YOUR Transformation Pics
PostPosted: Fri Oct 16, 2015 9:25 am 
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Heres a Uruguay amethyst that I recently cut into Fred Van Sants - Deneb design. The photography is pretty average but the stone turned out well with some nice blue flashes. The 12.40ct piece ended up as a 4ct (10.1mm) faceted stone - c.a. 32% recovery. Happy with the result :)
Attachment:
Eddies Amethyst Rough 20151003Sml.jpg
Eddies Amethyst Rough 20151003Sml.jpg [ 170.71 KiB | Viewed 1511 times ]

Attachment:
Eddies Amethyst 20151015 SmlSml.jpg
Eddies Amethyst 20151015 SmlSml.jpg [ 122.3 KiB | Viewed 1511 times ]


Cheers,
GR


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