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How would you define this sapphire’s colour?
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Author:  1bwana1 [ Mon Jun 29, 2020 9:09 am ]
Post subject:  Re: How would you define this sapphire’s colour?

GIA has a colored stone grading criteria system (still developing) similar to the Diamond criteria. It is not been released to use in the labs yet, but is being actively taught as part of the G.G. course now.

As soon as this standardized system gets elevated to the colored stone industry the public will be better off, just like they are with Diamonds today. Salesmen looking for high margins will not be, as margin compression will almost certainly be part of the result.

Remember River, Cape, Blue White, Jager, Canary, etc, as color descriptions of diamond? Aren't we all glad those are gone now?

What color is Padparadscha? Well that depends on who is looking at it and making the call. But if you have a system that defines the Hue, Saturation, and Tone ranges that qualify as a Padparadscha then the issue is fairly simple. It also becomes easier for a jeweler to communicate with a supplier. He can say, the customer favors stone more to one side or the other of each parameter.

This goes for all colored stone varieties.

Author:  glhays [ Mon Jul 20, 2020 11:16 pm ]
Post subject:  Re: How would you define this sapphire’s colour?

Quote:
I like the dragon fruit rind description. Without the rind part it sounds quite cool: dragon fruit sapphire :lol:
Really? Sounds childish. My wife would murder me if she ever heard me describing a stone like that.

Author:  1bwana1 [ Tue Jul 21, 2020 10:11 am ]
Post subject:  Re: How would you define this sapphire’s colour?

glhays wrote:
My wife would murder me if she ever heard me describing a stone like that.


And she would be justified. No jury would convict her.

Author:  glhays [ Tue Jul 21, 2020 1:58 pm ]
Post subject:  Re: How would you define this sapphire’s colour?

1bwana1 wrote:
glhays wrote:
My wife would murder me if she ever heard me describing a stone like that.


And she would be justified. No jury would convict her.
Steve, I will hope you do not make it into the jury pool.
Although the term watermelon tourmaline has been so excepted for so long, to non gem savy people have no clue how to interpret the association to a fruit. Would be like having a Pea Skin Tsavorite (Cooked not Raw) or maybe a frozen variety.

Author:  Barbra Voltaire, FGG [ Tue Jul 21, 2020 2:33 pm ]
Post subject:  Re: How would you define this sapphire’s colour?

Yes, there are some examples of trade names which have become standard in the lexicon. And clearly, describing a tourmaline as "watermelon" can work for some.

But, what hues and tones and saturation is our watermelon?
Is our melon not quite ripe yet?
Image
Getting there:
Image
or is it starting to look a little past it's prime
Image

I'd call these stones tri-color and describe appropriate hue, tome and saturation.

Author:  Jewels Lobato [ Sun Feb 06, 2022 1:39 am ]
Post subject:  Re: How would you define this sapphire’s colour?

It's a reddish pink sapphire. Simply put. You would literally need to have a plethora of stones just like it in order to name it like that.Its not necessary to coin a phrase for it to sell .A buyer will purchase based on visuals more than a name if they are really looking for a pink or red sapphire. They stumble on this and get the best of both worlds. I would describe it like this : a beautiful sapphire that displays the pinks and reds of a sunset. ... thats if you feel that words will play a huge role . The gem can speak for itself IMO.

Author:  Barbra Voltaire, FGG [ Sun Feb 06, 2022 1:23 pm ]
Post subject:  Re: How would you define this sapphire’s colour?

I disagree.
"Reddish pink" is speculative at best and frankly, does not accurately describe the stone's color. Ain't reminiscent of any sunset I've ever seen. Maybe that's a function of living in San Francisco.
It does not address tone and saturation, nor modifying colors.
Image

One would only need a reliable source for color masters, not a collection of every sapphire in the world.
Gem e Wizard
World of Color Grading System: Gem Dialog.
Pantone describes color well, using numerical references as well as consumer friendly names
https://www.pantone.com/connect (I'm a fan of Pantone; I actually often wish it was used for gems)

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Author:  glhays [ Sun Feb 06, 2022 4:05 pm ]
Post subject:  Re: How would you define this sapphire’s colour?

Why not "A beautiful sapphire that shines of all the colors of the rainbow" buyers please let your minds eye tell you the ones you see.
Just not proper for describing a gemstone. Reddish pink is not proper as well, how about pinkish Red. Or RedRuby Grapefruit Sapphire or is that just an orangish Red Ruby.

Author:  1bwana1 [ Sun Feb 06, 2022 7:51 pm ]
Post subject:  Re: How would you define this sapphire’s colour?

Jewels Lobato wrote:
I would describe it like this : a beautiful sapphire that displays the pinks and reds of a sunset. ... thats if you feel that words will play a huge role . The gem can speak for itself IMO.


Well since sunset colors are commonly used to describe the colors of Padparadscha I would avoid using "Sunset" to describe any other Sapphire variety.

Author:  1bwana1 [ Sun Feb 06, 2022 7:56 pm ]
Post subject:  Re: How would you define this sapphire’s colour?

Barbra Voltaire, FGG wrote:
Yes, there are some examples of trade names which have become standard in the lexicon. And clearly, describing a tourmaline as "watermelon" can work for some.



But to me "Watermelon" when used to describe Tourmaline is properly applied to a color growth pattern, not the two colors. These stones look to be BI-color, or tri-color Tourmalines where the growth pattern and cutting orientation is 90 degrees out from a true Watermelon Tourmaline.

Author:  Jewels Lobato [ Mon Feb 07, 2022 1:15 am ]
Post subject:  Re: How would you define this sapphire’s colour?

Thank you Barbra. Always excellent points with good educational references. I stand corrected and gladly so.

Author:  Jewels Lobato [ Mon Feb 07, 2022 12:48 pm ]
Post subject:  Re: How would you define this sapphire’s colour?

1bwana1 wrote:
Download the free GemEWizard App and learn how to properly describe color as Barbra has done.

http://www.gemeapps.com/



It looks like this app is not available on Google play store. Is there an equivalent?

Author:  chrisP [ Tue Feb 08, 2022 2:20 am ]
Post subject:  Re: How would you define this sapphire’s colour?

Try that link

http://gemewizard.com/products-services ... index.html

Author:  TheL [ Fri Feb 11, 2022 5:16 pm ]
Post subject:  Re: How would you define this sapphire’s colour?

And on a similar note to the improvement in gemology towards describing colour objectively/accurately: I believe the colour of gemstones should be judge through a window of it infront of neutral white paper under a specific illuminant. Judging colour that has been reflected several times within the stone has too many variables like dispersion, accumulation of saturation depending on bounces, depth of stone, etc. Using just the absorption colour would be more objective.
my humble 1 cent.

Author:  Barbra Voltaire, FGG [ Sat Feb 12, 2022 11:16 pm ]
Post subject:  Re: How would you define this sapphire’s colour?

TheL wrote:
And on a similar note to the improvement in gemology towards describing colour objectively/accurately: I believe the colour of gemstones should be judge through a window of it infront of neutral white paper under a specific illuminant. Judging colour that has been reflected several times within the stone has too many variables like dispersion, accumulation of saturation depending on bounces, depth of stone, etc. Using just the absorption colour would be more objective.
my humble 1 cent.


Perfect!
Leveling the playing field seems essential. But universal access to the same playing field is also essential.

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