OEC ASET - What am I seeing?

[BlingObsession]

Please help 'cos I have no idea how to interpret this....



Is it what could be called an "ok", "good" or "excellent" ASET for an OEC?

Some centre facets are showing blue and some red - does this mean something, i.e. will the blue facets always look / perform differently to the rest of the facets or is this just the nature of the ASET?

Thank you.

 

[icy_jade]

Not an expert but found this off google from the August vintage site:

A brief explanation of what ASET results generally translate to are the following...

• Green = reflections entering from a 0-45 degree angular spectrum or simply reflections entering off the horizon. Look around the room you're in as you're reading this. Are the brightest sources of illumination coming off the walls? I didn't think so. Green = dull reflections. Dull in = dull out.
  
  
• Red = reflections entering from a 45-75 degree angular spectrum or from above the horizon and around your head. Look above the horizon and around your head. Is your workplace and common surroundings illuminated from above? Red is good. Red will be the primary color we see in the rarest diamonds regardless of cut/shape/faceting etc. Red is the primary color we want to see in an ASET analysis.
  
  
• Blue = reflections entering from a 75-90 degree angular spectrum or reflections entering from directly in front of the diamond. This is generally representative of head and body shadow as you or your observer will be looking at the diamond and part of the environment as well.
  
  
• White = Light leakage.
  

The key to this analysis then is that we want to see a primary saturation of reds. Blue and green are ok but must be minimal and if present, properly distributed in the right places. In essence ... over a decade of working with diamond measuring devices and optical technologies like Sarin, ASET, FireScope, Isee2, Gemex BrillianceScope etc. and working with these diamonds that have only grown in demand over the last decade I knew the OEC had not yet been perfected. The closest it came was by the inventor of the original American Ideal back in the late 1800's. A gentleman by the name of Henry Morse came out with the "American Ideal Cut" but back then they did not have the technologies nor the tools to cut what it is we have been able to refine and are producing today.

From:
https://august-vintage-inc.myshopify.com/pages/the-august-vintage-european-cut

 

[icy_jade]

And this chart if it helps...

https://www.pricescope.com/journal/screening_chart_old_european_cut_diamonds

Asets that looks impressive (to me), from VC and AVC:



The pic you posted looks quite washed out but I see lots of leakage at the sides?

Hopefully the OEC experts will chime in soon.

 

[tyty333]

It looks like a pretty nice aset to me (obviously not cut to August Vintage standards). Its an old stone which are usually a little more "wonky" for
lack of a better word. For me personally, I dont expect perfection out of an old stone but, I do want to know that with a slight tilt that those blue
facets in the middle do light up. Have you seen an up-close video or can you get an up-close video? What are your standards for an old cut? Do you
want closer to perfection (AVR style) or do you just want a pretty, old/antique stone that lights up nicely? You have to determine what you want
to see. I would also take price into consideration. If you get a video, post it. Or order the stone (make sure it has a good return policy) and check
the stone out yourself. Post up close pictures for opinions.

 

[missy]

Yes just based on this ASET I would recommend seeing the stone in person. The ASET varies quite a bit depending on who's doing the ASET ie how they are holding the stone, the light source, tilt etc. Based on this I wouldn't rule it out. It's a see it in person decision and as @tyty333 wrote it looks like it has potential.

 

[BlingObsession]

Thanks @tyty333 - yes it is an old stone and I don't mind the slightly wonky flavour. While I do, in principal, love the idea of an AVC/AVR I just adore the romance of a stone cut a hundred years ago so a genuine old cut is the only option for me. Yes, I have seen the video - the facets in the middle do light up. The vendor said it is a top tier performing OEC but it's always nice to have other opinions as well. So I appreciate you taking the time to share your thoughts.

 

[tyty333]

Thanks @tyty333 - yes it is an old stone and I don't mind the slightly wonky flavour. While I do, in principal, love the idea of an AVC/AVR I just adore the romance of a stone cut a hundred years ago so a genuine old cut is the only option for me. Yes, I have seen the video - the facets in the middle do light up. The vendor said it is a
top tier performing OEC but it's always nice to have other opinions as well. So I appreciate you taking the time to share your thoughts.

I hear you on owing something that was cut a 100 years ago or so...I feel the same way! The idea of what kind of life the stone has had,
who has owned it, who has worn and loved it, and how it made its way to you just adds to the charm. Not that we'll ever know the answers
to these questions but the possibilities are intriguing.

If you move forward with this stone, please post pics when you have it set...we'd love to see!

 

[BlingObsession]

I hear you on owing something that was cut a 100 years ago or so...I feel the same way! The idea of what kind of life the stone has had,
who has owned it, who has worn and loved it, and how it made its way to you just adds to the charm. Not that we'll ever know the answers
to these questions but the possibilities are intriguing.

If you move forward with this stone, please post pics when you have it set...we'd love to see!

Thank you tyty - I make up little stories in my head about where it was found/mined, who cut it, who bought it for whom and who ended up wearing it. You are right - we'll never know but I just love the romance of something so old and so beautiful because it was amazingly cut by hand. Totally cool.

I will definitely come back with pics, in due course, and I'll tag you.

Thanks again.