Any guestimates before i have appraisal?

[Ccassini]

I am having this ring appraised. In the meantime, any guestimates would be favorable. Markings of CB = Charles Boyton of London. Not sure yet if 1820 or 1894. 1.5 carats sapphires. Any other information about this jeweler or piece would be appreciated.

 

[stracci2000]

I could be wrong, but this doesn't look like an antique ring at all.
Are there any marks besides the "CB" ? It appears that Charles Boyton was a silversmith, not working in gold.
If it were Charles Boyton from that time period, and he did do some gold jewelry, then all the British gold marks should be present.

 

[Ccassini]

It is a silver ring marked 925 as well. I didnt include the 925 marking .

 

[stracci2000]

Ok, this changes everything.
The ring looked like yellow gold in your photos.
So the 925 mark wasn't commonly used before about 1980. Before that, items were marked "silver" or "sterling".
So this tells me that your ring dates after about 1980. And being that it's sterling, there's no way those sapphires are real. Sapphire of that color and clarity would only be set into high karat gold or platinum, and be accented by lots of diamonds.
If you take it to a jeweler for a verbal appraisal, be prepared for a value of under $50.

 

[VRBeauty]

Those stones, whatever they are, are an absolutely luscious shade of blue!
There’s one prong on the ring that concerns me - it’s not tight to the stone, and could easily catch on something. And with four-prong settings, even a single bad prong can lead to a missing stone. So you might want to get those prongs checked and tightened!

 

[Mrs_Strizzle]

Could they be London blue topaz?

 

[Bron357]

Hi, with UK hallmarks there is a full series of marks in a row to go with the manufacturer mark including a “letter” which is how you can date a piece. Also they aren’t stamped “925” what is used is a lion passant which is the standard or 925/1000 parts silver.
The CB is a makers mark but not for a UK assayed piece. The ring is modern, 925 as it is a sterling mark is common to most countries so the origin of the ring can’t be identified. And the blue gems might be synthetic sapphire or even blue topaz.