OMC diamond ring age?

[ilovegemstones]

Can anyone tell me how old this OMC champagne diamond is? The setting is from the 1930's. It is 0.57 ct.
I have no clue what colour it is in terms of a letter. I really like it even though there is a big inclusion in it. It shows fluorescence under my blacklight. It is like a little round disco ball!

 

[kgizo]

I have no clue, but think it is pretty. I like the setting, too.

 

[artdecogirl]

What a lovely ring! I am surprised at the age of the setting, it looks more Edwardian to me, I would say pre 1900. Gorgeous stone and setting

 

[ilovegemstones]

Sorry I just saw this reply now. Thank you kgizo and artdecogirl. What you say makes sense artdecogirl because it would match the age of the stone going by its cut. The seller who is very knowledgeable thought it was a setting from the '30s. Maybe she is wrong! I would be very happy! The ring is stamped "9ct" three times.