New Mineral Named After GIA’s John Koivula
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 Post subject: Re: Off the dop - post YOUR latest creation
PostPosted: Sun Jun 30, 2019 10:53 am 
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Barbra Voltaire wrote:
Oops Duncan...I was confused.
I saw the copied link in Dor's post with no image attached.
Everything is OK. :oops:


again I am causing problems ? :mrgreen: :lol:

well,if i am already here, I will post something...
my recent creation-
Natural sapphire (nigeria)
0.74ct finished (cut from very flat 3ct rough piece)
this was actually the first attempt for me to cut corundum.
I was prepared for a "polishing nightmare" on the ceramic ,but luckily i haven't find the need for using it...
just cut with 1200,follow by solid long prepolish on the Batt ,and than a touch with 50k on the corian and that's it.
happy with the result. :)

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 Post subject: Re: Off the dop - post YOUR latest creation
PostPosted: Wed Jul 03, 2019 6:15 am 
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Very nice stone, Dor. Really exemplifies the "crisp"/sharp angles that you only see with precision faceting. Also looks like a good candidate (ie low risk) for heat treatment, what with how clean it looks inclusion-wise


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 Post subject: Re: Off the dop - post YOUR latest creation
PostPosted: Wed Jul 03, 2019 1:54 pm 
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thresh wrote:
Very nice stone, Dor. Really exemplifies the "crisp"/sharp angles that you only see with precision faceting. Also looks like a good candidate (ie low risk) for heat treatment, what with how clean it looks inclusion-wise


Thanks.
honestly, I couldn't determine if the rough was already heated or not.
no intact silk so even if it wasn't heated i cannot be 100% sure about it.
it is very clean,as you said, VS-VVS I will say,you can find very small inclusions under 10x and closer.
eye clean.
i do have a few bigger pieces from the same source,and i am keeping myself from cutting them so far...
i want to gain a bit more experience as a cutter before i am messing with very expensive stones.

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 Post subject: Re: Off the dop - post YOUR latest creation
PostPosted: Sat Aug 03, 2019 12:54 pm 
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Tanzanian Rhodolite Garnet ,2.02Ct
One of my recent creation,and one that I am quite happy with

https://www.youtube.com/embed/Yovx5mxQRhU?rel=0

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 Post subject: Re: Off the dop - post YOUR latest creation
PostPosted: Sun Aug 18, 2019 9:39 pm 
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This is probably the prettiest chalcedony I've ever cut.
A decently-sized chrysoprase from Tanzania I picked up at a local show last year. This one has very good translucency (and a section with interesting dendrites, left in the original rough piece) and it turned out better than expected (rough is shown at both sides of the cut stone).
The pavillion can actually reflect some light and makes the stone GLOW green. :)
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 Post subject: Re: Off the dop - post YOUR latest creation
PostPosted: Mon Aug 19, 2019 3:08 am 
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Location: Cape Town, South Africa
Sanidine (‘orthoclase’) feldspar from Itrongay, Madagascar (https://www.mindat.org/loc-2273.html). The 26.19 ct stone is 19 mm wide. The yellow colour in the reflection is closer to the true body colour of the stone. One side of the crown is very close to the perfect cleavage and facets on that quarter refused to polish on a Greenway™ or a Lightside™ lap, so I had to resort to polishing them on a wax lap. On such a large stone the slight rounding of the facet edges is not noticeable.
Attachment:
Orthoclase (sanidine) 19 mm 26.19 ct 7.JPG
Orthoclase (sanidine) 19 mm 26.19 ct 7.JPG [ 193.63 KiB | Viewed 495 times ]


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 Post subject: Re: Off the dop - post YOUR latest creation
PostPosted: Mon Aug 19, 2019 10:51 pm 
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Nice K-spar there. I'm always amazed at how clean/clear those Madagascar ones are...

This is another glow-ey stone, but for a different reason than the chrysoprase. :wink:
Ce:YAG
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 Post subject: Re: Off the dop - post YOUR latest creation
PostPosted: Tue Aug 20, 2019 1:35 pm 
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maialetto wrote:
Nice K-spar there. I'm always amazed at how clean/clear those Madagascar ones are...

This is another glow-ey stone, but for a different reason than the chrysoprase. :wink:
Ce:YAG


Nice cutting!!

I got an emerald cut chunk of this and it is something else... serious fluorescence!

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 Post subject: Re: Off the dop - post YOUR latest creation
PostPosted: Mon Sep 02, 2019 10:03 pm 
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Swirly lavender quartz...
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Almost there, but not quite. I need to add some tweaks... My choice was for a "clean" cutting diagram, but that went at expense of the reflections pattern more than expected.


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 Post subject: Re: Off the dop - post YOUR latest creation
PostPosted: Tue Sep 03, 2019 12:40 pm 
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Thats a cute stone -
I'm looking forward to seeing the finished work.

john


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 Post subject: Re: Off the dop - post YOUR latest creation
PostPosted: Thu Sep 05, 2019 2:01 pm 
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Some highlights from recent production. Thanks Stephen for explaining how to downsize my pictures, I'm not the sharpest knife in the drawer when it comes to computers.

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4.2ct Unheated Montana Sapphire, cut by Daniel O'Neil

Image
1.87ct Montana Sapphire, Unheated, cut by Michelle Mai in her own "Watter Spike" Oval

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2.5ct Unheated Montana Sapphire, cut by Christopher Bork in "Six Ray Mixed" by Walt Heitland and Dan Mooney

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1ct Cuprian Andean Opal, I'm oh-so in love with this material

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 Post subject: Re: Off the dop - post YOUR latest creation
PostPosted: Thu Sep 05, 2019 2:08 pm 
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The cuprian, Andean opal is otherworldly.


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 Post subject: Re: Off the dop - post YOUR latest creation
PostPosted: Thu Sep 05, 2019 7:06 pm 
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Yes, that Cuprian Opal is gorgeous. I am going to have to get a piece to go with my Tanzanian Nickle colored Opal.


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 Post subject: Re: Off the dop - post YOUR latest creation
PostPosted: Thu Sep 05, 2019 8:37 pm 
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Glad to see more of your beautiful work!
It's true, it's hard not to fixate on the opal. That material seems to fly off the shelves--I kept finding dealers who were flat sold out in Tucson.

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 Post subject: Re: Off the dop - post YOUR latest creation
PostPosted: Fri Sep 06, 2019 4:58 am 
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Stephen Challener wrote:
That material seems to fly off the shelves--I kept finding dealers who were flat sold out in Tucson.

No surprise there, even my crappy piece brightens up considerably when in yellow light. It's definitely the cabbing material of choice this year.
Ephsea those are some amazing photos of cabs on your instagram.


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