MrsT
Shiny_Rock
- Joined
- Jun 28, 2006
- Messages
- 260
Well I''ve established that finding an oval with minimal bowtie by numbers alone is not going to work.
I''m hoping to get some clarification from the knowledgeable folks here on the forum.
Anyone looking for this cut is going to have to rely on the vendor''s expertise,pictures, and how it looks to the eye. An Aset scope photo is helpful if you know what you''re looking for. I''m still not sure what a decent oval should look like under the Aset.
The link below shows the Diamond x-ray of an oval from GOG. What should this photo be telling me?
http://www.goodoldgold.com/diamond/2053/
I found a chart of oval diamonds which shows various depths and ratios and what you can expect as far as the bowtie effect. I thought this was great until I realized the info conflicts with AGA''s cut chart for ovals.
I was hoping someone could tell me if this is an accurate guide. Unfortunately I couldn''t print the diagram here is the link:
http://www.drostes.com/oval-depth.html
This article contradicts Accredited Gem Appraisers guidelines for Ideal cut ovals in that an "Ideal" cut oval has a depth of 59.0 -63.0%. Yet in the tutorial above 66 - 68% is better to minimize the bowtie.
As you can tell, my knowledge is shakey and I''m just trying to be better prepared in making a purchase for this cut.
I want to thank Lorelei for directing me to the AGA charts. However, it''s impossible to find the crown depth for most listed diamonds.
Don''t you wish someone would write an article for ovals showing the relationship of table and depth and bowtie?
Using pictures for people like me that can get easily confused? If any of the experts have done this I hope someone can direct me to the article or tutorial.
Mrs. T
I''m hoping to get some clarification from the knowledgeable folks here on the forum.
Anyone looking for this cut is going to have to rely on the vendor''s expertise,pictures, and how it looks to the eye. An Aset scope photo is helpful if you know what you''re looking for. I''m still not sure what a decent oval should look like under the Aset.
The link below shows the Diamond x-ray of an oval from GOG. What should this photo be telling me?
http://www.goodoldgold.com/diamond/2053/
I found a chart of oval diamonds which shows various depths and ratios and what you can expect as far as the bowtie effect. I thought this was great until I realized the info conflicts with AGA''s cut chart for ovals.
I was hoping someone could tell me if this is an accurate guide. Unfortunately I couldn''t print the diagram here is the link:
http://www.drostes.com/oval-depth.html
This article contradicts Accredited Gem Appraisers guidelines for Ideal cut ovals in that an "Ideal" cut oval has a depth of 59.0 -63.0%. Yet in the tutorial above 66 - 68% is better to minimize the bowtie.
As you can tell, my knowledge is shakey and I''m just trying to be better prepared in making a purchase for this cut.
I want to thank Lorelei for directing me to the AGA charts. However, it''s impossible to find the crown depth for most listed diamonds.
Don''t you wish someone would write an article for ovals showing the relationship of table and depth and bowtie?
Using pictures for people like me that can get easily confused? If any of the experts have done this I hope someone can direct me to the article or tutorial.
Mrs. T
300x240.png)