Diamond Jewelry Forums

Picture Gallery

Video Gallery

|

Search |

Posted Today |

Most Active |

Help

ť Home ť

ť Diamond Prices and Grading ť

ť Colored Stones ť

ť Cut of coloured stones

Cut of coloured stones

P: 3/15/2009 5:40:48 PM
Porridge Ideal Rock Total Posts: 1,614 Last Post: 11/25/2009 Member Since: 10/27/2008	Point me in the right direction if this has been asked before, but I can't find a thread. How do you evaluate cut on coloured stones? Are the guidelines the same as for diamonds? Are different parameters in use for different colours/grades etc? I presume you can't use IdealScope or ASET?
Posted: 3/15/2009 5:40:48 PM

There are 16 replies to this message. There are 16 replies on this page.

P: 3/15/2009 5:59:40 PM
innerkitten Ideal Rock Total Posts: 2,923 Last Post: 11/23/2009 Member Since: 8/2/2003	I'm not really sure what the rules are in comparison to diamonds. I'm sure that someone here will have some knowledge to share. I just look for a nice even cut, good proportions, no window, a pleasing color, not a lot of extinction, those types of things. I'm pretty sure Pricescope has some colored stone info on this site. I'll check for you.
Posted: 3/15/2009 5:59:40 PM

P: 3/15/2009 6:00:22 PM
innerkitten Ideal Rock Total Posts: 2,923 Last Post: 11/23/2009 Member Since: 8/2/2003	Here it is! http://www.pricescope.com/colorgems_intro.asp
Posted: 3/15/2009 6:00:22 PM

P: 3/15/2009 6:08:27 PM
Porridge Ideal Rock Total Posts: 1,614 Last Post: 11/25/2009 Member Since: 10/27/2008	Thanks Innerkitten!
Posted: 3/15/2009 6:08:27 PM

P: 3/16/2009 10:29:08 AM
innerkitten Ideal Rock Total Posts: 2,923 Last Post: 11/23/2009 Member Since: 8/2/2003	You're welcome. I noticed there was some info being discussed in this post as well today. It's the one titled tilt window. http://www.pricescope.com/idealbb/view.asp?topicID=109957
Posted: 3/16/2009 10:29:08 AM

P: 3/16/2009 10:46:00 AM
Harriet Ideal Rock Total Posts: 11,800 Last Post: 11/19/2009 Member Since: 7/7/2006	Hi Porridge, I don't think that the cut of coloured stones can be evaluated along the same lines as that of diamonds. They have different optical properties, for one. I look for symmetry and the lack of windows. Other than that, it's colour first for me! "The greatest experts are only as good as the sum total of what they have seen." (Souren Melikian)
Posted: 3/16/2009 10:46:00 AM

P: 3/16/2009 4:10:20 PM
Porridge Ideal Rock Total Posts: 1,614 Last Post: 11/25/2009 Member Since: 10/27/2008	Good advice Harriet. I guess I just need to get out there and look at many, many stones! Ah, life is hard...
Posted: 3/16/2009 4:10:20 PM

P: 3/16/2009 4:21:38 PM
FrekeChild Ideal Rock Total Posts: 12,928 Last Post: 11/25/2009 Member Since: 12/14/2007	Yeah colored stones are an entirely different world from diamonds in cut. There is well cut without windows, extinction, bowties, etc and there are not so well cut that may have any of those flaws that the well cut stones don't have. _______________________________ "Women are either goddesses or doormats." Pablo Picasso "In all matters of opinion, our adversaries are insane." Mark Twain
Posted: 3/16/2009 4:21:38 PM

P: 3/16/2009 7:19:48 PM
Harriet Ideal Rock Total Posts: 11,800 Last Post: 11/19/2009 Member Since: 7/7/2006	Date: 3/16/2009 4:10:20 PM Author: Porridge Good advice Harriet. I guess I just need to get out there and look at many, many stones! Ah, life is hard... Yes! Try to go to as many gems shows as you can. You'll quickly learn to suss out the good, the bad, and the ugly. Where are you located, if you don't mind my asking? "The greatest experts are only as good as the sum total of what they have seen." (Souren Melikian)
Posted: 3/16/2009 7:19:48 PM

P: 3/16/2009 7:51:00 PM
coatimundi_org Ideal Rock Total Posts: 6,312 Last Post: 6/7/2009 Member Since: 12/9/2007	Hi Porridge, I evaluate colored stones based on their best face up view. I start with color and brilliance, and then I look for windowing, extinction, and symmetry. I also look at the stone in profile to assess pavilion bulge, if any, and check to see if the girdle is thin enough for the stone to be set into jewelry. There are many custom cutters on this board who can take some of the cut guess work out for you, but there is a lot of pleasure to be derived in the hunt. Have fun playing with gems! Coati, G.G.
Posted: 3/16/2009 7:51:00 PM

P: 3/16/2009 8:01:12 PM
Porridge Ideal Rock Total Posts: 1,614 Last Post: 11/25/2009 Member Since: 10/27/2008	Thanks Freke! Harriet I'm in Ireland at the moment. Not much in the way of gem shows going on here. I'm moving over to California in July (for a few years, cos of FI's job), so I should be well based there I think?!? Coati you're a mine of info, thanks a million
Posted: 3/16/2009 8:01:12 PM

P: 3/16/2009 8:06:10 PM
Harriet Ideal Rock Total Posts: 11,800 Last Post: 11/19/2009 Member Since: 7/7/2006	Yes, especially if you'll be in LA. "The greatest experts are only as good as the sum total of what they have seen." (Souren Melikian)
Posted: 3/16/2009 8:06:10 PM

P: 3/16/2009 8:29:34 PM
coatimundi_org Ideal Rock Total Posts: 6,312 Last Post: 6/7/2009 Member Since: 12/9/2007	You're welcome Porridge! You'll be my neighbor soon. Coati, G.G.
Posted: 3/16/2009 8:29:34 PM

P: 3/16/2009 8:55:18 PM
movie zombie Ideal Rock Total Posts: 5,222 Last Post: 11/25/2009 Member Since: 1/20/2005	Date: 3/16/2009 10:46:00 AM Author: Harriet Hi Porridge, I don't think that the cut of coloured stones can be evaluated along the same lines as that of diamonds. They have different optical properties, for one. I look for symmetry and the lack of windows. Other than that, it's colour first for me! +1000 mz "I don't feel enjoyment watching films that evoke passivity. If you need that kind of comfort, I don't understand why you wouldn't go to a spa." Chan-wook Park
Posted: 3/16/2009 8:55:18 PM

P: 3/16/2009 8:59:25 PM
Porridge Ideal Rock Total Posts: 1,614 Last Post: 11/25/2009 Member Since: 10/27/2008	Date: 3/16/2009 8:29:34 PM Author: coatimundi You're welcome Porridge! You'll be my neighbor soon. Sweet! We'll have a Porridge Comes to Cali GTG and you can educate my wee blank canvas of a brain! Seriously can't wait to get out of this friggin rain and into the sun
Posted: 3/16/2009 8:59:25 PM

P: 3/16/2009 9:11:14 PM
Chrono Ideal Rock Total Posts: 11,338 Last Post: 11/24/2009 Member Since: 4/22/2004	And even with colour, there's so many nuances within it. 1. Saturation 2. Tone 3. Hue I would like at least decent cutting, something that won't detract from the beauty of the stone. The best way is to just get a lot of exposure to gemstones. Browse gem shows, read good gemmology books, check out the free course at www.acstones.com and visit some high quality coloured gemstone jewellers/stores.
Posted: 3/16/2009 9:11:14 PM

P: 3/16/2009 9:21:40 PM
coatimundi_org Ideal Rock Total Posts: 6,312 Last Post: 6/7/2009 Member Since: 12/9/2007	Date: 3/16/2009 8:59:25 PM Author: Porridge Date: 3/16/2009 8:29:34 PM Author: coatimundi You're welcome Porridge! You'll be my neighbor soon. Sweet! We'll have a Porridge Comes to Cali GTG and you can educate my wee blank canvas of a brain! Seriously can't wait to get out of this friggin rain and into the sun hehe--We should! Get outta the rain indeed! Let's see, today it was sunny clear and cool--around 65 degrees. It should be warming up pretty soon! Coati, G.G.
Posted: 3/16/2009 9:21:40 PM

Previous Page

Next Page

Ť Where to find a pretty pink stone ring? Ť

ť my very first Pad... ť

Jump to:

Contact Us \| Back Home \| Privacy Statement \| Forum Agreement \| Forum Policies
Ideal BB Version: 0.1.5.4.beta1	Message forum software powered by the Ideal BB

Pricescope - Knowledge - Diamond Prices - Tools - Resources - About

Š 2000-2009 Pricescope. Terms of Use Privacy Policy Disclaimer
forum archives