Was the 1940's .....

[CDCsparkles]

when diamonds were becoming not old cuts and more modern style diamonds?

What got me thinking was this thread....
[URL='https://www.pricescope.com/community/threads/antique-e-ring-help-for-a-friend.179814/']https://www.pricescope.com/community/threads/antique-e-ring-help-for-a-friend.179814/[/URL]

The ring in the pictures is from the 1940's and has an old cut in it. However, the other one is from the same time frame and is a modern diamond.
My ring from the 40's has a modern diamond.

When was the cut off for when diamonds went mostly to modern styles?

 

[ruby59]

I asked this same question a while back. I inherited a 1.05 carat VS1 G diamond from my mother. She and my late father got married in 1948, so the diamond was cut prior to that. It is a modern cut diamond.

Someone on here replied that the tools needed to cut a modern stone was available after World War II. And at that time, some of the diamond houses started cutting modern diamonds.

 

[Lane03]

http://en.wikipedia.org/wiki/Diamond_cut#History

Around 1900, the development of diamond saws and good jewelry lathes enabled the development of modern diamond cutting and diamond cuts, chief among them the round brilliant cut. In 1919, Marcel Tolkowsky analyzed this cut: his calculations took both brilliance (the amount of white light reflected) and fire into consideration, creating a delicate balance between the two.[1] Tolkowsky's calculations would serve as the basis for all future brilliant cut modifications and standards.

 

[CDCsparkles]

Lane...
Ive read the history of diamonds, I think what I'm trying to figure out is 2 rings from the 40's...if one ended up with an old cut stone and one a modern, was it just the jewelry makers preference?

 

[Lane03]

Well, considering the RB didn't really start to kick in till the 1920's I'm sure there was still people who preferred the old cut in the 1940's or perhaps there was still a fair amount of stock of the old cut diamonds. Another possibility is that it was used in an older piece of jewelry that was reset in the 1940s into the newer setting.